Lifetime measurements of ultracold clouds near cryogenic surfaces (2009)
Kasch, B., Hattermann, H., Cano, D., Judd, T. E., Scheel, S., Zimmermann, C., ...
We describe measurements of the trap lifetime of an ultracold atom cloud near niobium and copper surfaces at cryogenic temperatures. Large lifetimes of 35-160 seconds at 20-30 micrometers from...
Nuclear Charge Radii of Be-7,Be-9,Be-10 and the One-Neutron Halo Nucleus Be-11 (2009)
Tiedemann, D, Zakova, M, Andjelkovic, Z, Blaum, K, ...
Nuclear charge radii of Be-7,Be-9,Be-10,Be-11 have been determined by high-precision laser spectroscopy. On-line measurements were performed with collinear laser spectroscopy in the 2s(1/2)-> 2p(1/2)...
Nuclear charge radii of 7,9,10Be and the one-neutron halo nucleus 11Be (2009)
Nörtershäuser, Wilfried, Tiedemann, D., Záková, M., Andjelkovic, Z., Blaum, Klaus, Bissell, M. L., ...
When is year-class strenght determined in western Baltic herring? (2009)
Oeberst, R., Klenz, B., Groehsler, T., Dickey-Collas, M., Nash, R.D.M., Zimmermann, C.
Weekly surveys of larvae in the Strelasund and the Greifswalder Bodden were used to investigate when year-class strength is determined in western Baltic spring-spawning (WBSS) herring. An abundance...
Nucleosynthetic osmium isotope anomalies in acid leachates of the Murchison meteorite (2008)
Reisberg, L., Dauphas, N., Luguet, A., Pearson, D. G., Gallino, R., Zimmermann, C.
We present osmium isotopic results obtained by sequential leaching of the Murchison meteorite, which reveal the existence of very large internal anomalies of nucleosynthetic origin. The Os isotopic...
Bragg spectroscopy and Ramsey interferometry with an ultracold Fermi gas (2008)
Deh, B., Marzok, C., Slama, S., Zimmermann, C., Courteille, Ph. W.
We report on the observation of Bragg scattering of an ultracold Fermi gas of 6Li atoms at a dynamic optical potential. The momentum states produced in this way oscillate in the trap for time scales...
Optical Spectroscopy of Ultracold Atoms on an Atom Chip (2008)
Günther, A., Bender, H., Stibor, A., Fortágh, J., Zimmermann, C.
We experimentally demonstrate optical spectroscopy of magnetically trapped atoms on an atom chip. High resolution optical spectra of individual trapped clouds are recorded within a few hundred...
Nuclear Charge Radii of Be-7,9,10 and the one-neutron halo nucleus Be-11 (2008)
Nörtershäuser, W., Tiedemann, D., Žáková, M., Andjelkovic, Z., Blaum, K., Bissell, M. L., ...
Nuclear charge radii of $^{7,9,10,11}$Be have been determined by high-precision laser spectroscopy. On-line measurements were performed with collinear laser spectroscopy in the $2s_{1/2} \to...
Feshbach resonances in an ultracold $^7$Li and $^{87}$Rb mixture (2008)
Marzok, C., Deh, B., Zimmermann, C., Courteille, Ph. W., Tiemann, E., Vanne, Y. V., ...
We report on the observation of five Feshbach resonances in collisions between ultracold $^7$Li and $^{87}$Rb atoms in the absolute ground state mixture where both species are in their...
Cano, D., Kasch, B., Hattermann, H., Koelle, D., Kleiner, R., Zimmermann, C., ...
We theoretically evaluate changes in the magnetic potential arising from the magnetic field near superconducting thin films. An example of an atom chip based on a three-wire configuration has been...
Meissner effect in superconducting microtraps (2008)
Cano, D., Kasch, B., Hattermann, H., Kleiner, R., Zimmermann, C., Koelle, D., ...
We report on the realization and characterization of a magnetic microtrap for ultra cold atoms near a straight superconducting Nb wire with circular cross section. The trapped atoms are used to probe...
In situ Ramsey Interferometry and Diffraction Echo with an Ultracold Fermi Gas (2008)
Marzok, C., Deh, B., Slama, S., Zimmermann, C., Courteille, Ph. W.
We report on the first observation of Bragg scattering of an ultracold $^6$Li Fermi gas. We demonstrate a Ramsey-type matter-wave interferometer based on Bragg diffraction and find robust signatures...
High-brightness quantum well and quantum dot tapered lasers (2008)
Michel, N., Krakowski, M., Hassiaoui, I., Calligaro, M., Lecomte, M., Parillaud, O., ...
Several types of high-brightness near-infrared tapered quantum well and quantum dots tapered lasers are reviewed and compared. Recent developments include record-high brightness quantum well tapered...
Feshbach resonances in mixtures of ultracold $^6$Li and $^{87}$Rb gases (2007)
Deh, B., Marzok, C., Zimmermann, C., Courteille, Ph. W.
We report on the observation of two Feshbach resonances in collisions between ultracold $^6$Li and $^{87}$Rb atoms in their respective hyperfine ground states $|F,m_F>=|1/2,1/2>$ and $|1,1>$. The...
Ultracold Thermalization of $^7$Li and $^{87}$Rb (2007)
Marzok, C., Deh, B., Courteille, Ph. W., Zimmermann, C.
We report on measurements of cross-species thermalization inside a magnetically trapped spin-polarized mixture of $^{87}$Rb and $^7$Li atoms with both atoms in their respective low field seeking...
Lewejohann, J, Prang, M, Seyfried, F, Henning, A, Zimmermann, C, Hansen, M, ...
No abstract available.
Calibration of a single atom detector for atomic micro chips (2007)
Stibor, A., Kraft, S., Campey, T., Komma, D., Günther, A., Fortágh, J., ...
We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the...
Spatially resolved photo ionization of ultracold atoms on an atom chip (2007)
Kraft, S., Günther, A., Fortágh, J., Zimmermann, C.
We report on photo ionization of ultracold magnetically trapped Rb atoms on an atom chip. The atoms are trapped at 5 $\mu $K in a strongly anisotropic trap. Through a hole in the chip with a diameter...
Enhanced absorption Hanle effect on the Fg=F->Fe=F+1 closed transitions (2007)
Renzoni, F., Zimmermann, C., Verkerk, P., Arimondo, E.
We analyse the Hanle effect on a closed $F_g\to F_e=F_g+1$ transition. Two configurations are examined, for linear- and circular-polarized laser radiation, with the applied magnetic field collinear...
Calibration of a single-atom detector for atomic microchips (2007)
Stibor, A., Kraft, S., Tom Campey, Komma, D., Gunther, A., Fortagh, J., ...
We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the...
Calibration of a single-atom detector for atomic microchips (2007)
Stibor, A., Kraft, S., Tom Campey, Komma, D., Gunther, A., Fortagh, J., ...
We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the...
Controlling mode locking in optical ring cavities (2006)
Krenz, G., Bux, S., Slama, S., Zimmermann, C., Courteille, Ph. W.
Imperfections in the surface of intracavity elements of an optical ring resonator can scatter light from one mode into the counterpropagating mode. The phase-locking of the cavity modes induced by...
Superradiant Rayleigh scattering in a ring cavity (2006)
Slama, S., Bux, S., Krenz, G., Zimmermann, C., Courteille, Ph. W.
Collective interaction of light with an atomic gas can give rise to superradiant instabilities. We experimentally study the sudden build-up of a reverse light field in a laser-driven high-finesse...
Atom counting in ultra-cold gases using photoionisation and ion detection (2006)
Campey, T., Vale, C. J., Davis, M. J., Kraft, S., Zimmermann, C., Fortágh, J., ...
We analyse photoionisation and ion detection as a means of accurately counting ultra-cold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better...
Phase coherent splitting of Bose-Einstein condensates with an integrated magnetic grating (2006)
Günther, A., Kraft, S., Zimmermann, C., Fortágh, J.
We report the phase coherent splitting of Bose-Einstein condensates by means of a phase grating produced near the surface of a micro-electronic chip. A lattice potential with a period of $4\mu$m is...
Five years of EACH (European Association for Communication in Healthcare) (2006)
Dulmen, S. Van, Finset, A., Langewitz, W., Zimmermann, C., Peltenburg, M., Visser, Adriaan, ...
Five years after launching EACH (European Association for Communication in Healthcare) we look back at what EACH achieved so far and announce new ideas and activities EACH plans to carry out in the...
Atom counting in ultracold gases using photoionization and ion detection (2006)
Campey, T, Vale, CJ, Davis, MJ, Heckenberg, NR, Rubinsztein-Dunlop, H, Kraft, S, ...
We analyze photoionization and ion detection as a means of accurately counting ultracold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better...
Repair process development for blisk applications in aeroengines (2006)
Haubold, T., Zhu, L., Zimmermann, C., Mattern, C., Kelbassa, I., Dahmen, M., ...
Atom counting in ultracold gases using photoionization and ion detection (2006)
Campey, T, Vale, CJ, Davis, MJ, Heckenberg, NR, Rubinsztein-Dunlop, H, Kraft, S, ...
We analyze photoionization and ion detection as a means of accurately counting ultracold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better...
Atom counting in ultracold gases using photoionization and ion detection (2006)
Campey, T., Vale, C. J., Davis, M. J., Heckenberg, N. R., Rubinsztein-Dunlop, H., Kraft, S., ...
We analyze photoionization and ion detection as a means of accurately counting ultracold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better...
Atom counting in ultracold gases using photoionization and ion detection (2006)
Campey, T., Vale, C. J., Davis, M. J., Heckenberg, N. R., Rubinsztein-Dunlop, H., Kraft, S., ...
We analyze photoionization and ion detection as a means of accurately counting ultracold atoms. We show that it is possible to count clouds containing many thousands of atoms with accuracies better...
Highly versatile atomic micro traps generated by multifrequency magnetic field modulation (2005)
Courteille, Ph. W., Deh, B., Fortágh, J., Günther, A., Kraft, S., Marzok, C., ...
We propose the realization of custom-designed adiabatic potentials for cold atoms based on multimode radio frequency radiation in combination with static inhomogeneous magnetic fields. For example,...
Creating and probing long-range order in atomic clouds (2005)
Von Cube, C., Slama, S., Kohler, M., Zimmermann, C., Courteille, Ph. W.
Ultracold atoms interacting with the optical modes of a high-Q optical ring cavity can synchronize their motion. The collective behavior makes the system interesting for quantum computing...
Multiple Reflections and Diffuse Scattering in Bragg Scattering at Optical Lattices (2005)
Slama, S., Von Cube, C., Kohler, M., Zimmermann, C., Courteille, Ph. W.
We study Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated inside a laser-driven cavity. The atoms arrange...
Nuclear Charge Radius of Li-9, Li-11: Halo Neutron: the influence of Halo Neutrons (2005)
Sánchez, R., Nörtershäuser, W., Ewald, G., Albers, D., Behr, J., Bricault, P., ...
The nuclear charge radius of Li-11 has been determined for the first time by high precision laser spectroscopy. On-line measurements at TRIUMF-ISAC yielded a Li-7 - Li-11 isotope shift (IS) of...
Quantum-degenerate mixture of fermionic lithium and bosonic rubidium gases (2005)
Silber, C., Guenther, S., Marzok, C., Deh, B., Courteille, Ph. W., Zimmermann, C.
We report on the observation of sympathetic cooling of a cloud of fermionic 6-Li atoms which are thermally coupled to evaporatively cooled bosonic 87-Rb. Using this technique we obtain a mixture of...
Dimensional Crossover in Bragg Scattering from an Optical Lattice (2005)
Slama, S., Von Cube, C., Ludewig, A., Kohler, M., Zimmermann, C., Courteille, Ph. W.
We study Bragg scattering at 1D optical lattices. Cold atoms are confined by the optical dipole force at the antinodes of a standing wave generated inside a laser-driven high-finesse cavity. The...
Atom-optical elements on micro chips (2005)
Kraft, S., Guenther, A., Wicke, P., Kasch, B., Zimmermann, C., Fortagh, J.
We describe the realization of atom-optical elements as magnetic waveguide potentials, beam splitters and gravitational traps on a microchip. The microchip was produced by electroplating gold...
Combined chips for atom-optics (2005)
Guenther, A., Kemmler, M., Kraft, S., Vale, C. J., Zimmermann, C., Fortagh, J.
We present experiments with Bose-Einstein condensates on a combined atom chip. The combined structure consists of a large-scale "carrier chip" and smaller "atom-optics chips", containing micron-sized...
Diffraction of a Bose-Einstein condensate from a Magnetic Lattice on a Micro Chip (2005)
Guenther, A., Kraft, S., Kemmler, M., Koelle, D., Kleiner, R., Zimmermann, C., ...
We experimentally study the diffraction of a Bose-Einstein condensate from a magnetic lattice, realized by a set of 372 parallel gold conductors which are micro fabricated on a silicon substrate. The...
Zygomycosis by Rhizopus species – a very rare angioinvasive mycosis: report of three cases (2005)
Lewejohann, J, Hansen, M, Zimmermann, C, Kujath, P, Bruch, H
No abstract available.
Zimmermann, C., Rufer, A., Chabert, C.
This paper presents the operation principle and the properties of a single-phase DC-AC converter with medium frequency transformer and soft commutation. The influence of the non-dissipative snubber...
Combined chips for atom optics (2005)
Gunther, A, Kemmler, M, Kraft, S, Vale, C. J., Zimmermann, C, Fortagh, J
Combined chips for atom optics (2005)
Gunther, A, Kemmler, M, Kraft, S, Vale, C. J., Zimmermann, C, Fortagh, J
Combined chips for atom optics (2005)
Guenther, A., Kemmler, M., Kraft, S., Vale, C. J., Zimmermann, C., Fortagh, J.
We present experiments with Bose-Einstein condensates on a combined atom chip. The combined structure consists of a large-scale 'carrier chip' and smaller 'atom-optics chips,' containing micron-sized...
Combined chips for atom optics (2005)
Guenther, A., Kemmler, M., Kraft, S., Vale, C. J., Zimmermann, C., Fortagh, J.
We present experiments with Bose-Einstein condensates on a combined atom chip. The combined structure consists of a large-scale 'carrier chip' and smaller 'atom-optics chips,' containing micron-sized...
Zimmermann, C., Anson, C.E., Weigend, F., Clerac, R., Dehnen, S.
Inorganic Chemistry, 44(2005) S.5686-95
Rubidium Spectroscopy at 778-780 nm with a Distributed Feedback Laser Diode (2004)
Kraft, S., Deninger, A., Truck, Ch., Fortagh, J., Lison, F., Zimmermann, C.
We have performed high resolution spectroscopy of rubidium with a single mode continuous wave distributed feedback (DFB) laser diode. The saturation spectrum of the D_2-line of 85Rb and 87Rb was...
Phase-sensitive detection of Bragg scattering at 1D optical lattices (2004)
Slama, S., Von Cube, C., Deh, B., Ludewig, A., Zimmermann, C., Courteille, Ph. W.
We report on the observation of Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated by the two counter-propagating...
Self-synchronization and dissipation-induced threshold in collective atomic recoil lasing (2004)
Von Cube, C., Kruse, D., Zimmermann, C., Courteille, Ph. W., Piovella, N., ...
Networks of globally coupled oscillators exhibit phase transitions from incoherent to coherent states. Atoms interacting with the counterpropagating modes of a unidirectionally pumped high-finesse...
Self-synchronization and dissipation-induced threshold in collective atomic recoil lasing (2004)
Von Cube, C., Kruse, D., Zimmermann, C., Courteille, P.W., Robb, G.R.M., Piovella, N., ...
Networks of globally coupled oscillators exhibit phase transitions from incoherent to coherent states. Atoms interacting with the counterpropagating modes of a unidirectionally pumped high-finesse...
Self-synchronization and dissipation-induced threshold in collective atomic recoil lasing (2004)
Von Cube, C., Kruse, D., Zimmermann, C., Courteille, P.W., Robb, G.R.M., Piovella, N., ...
Networks of globally coupled oscillators exhibit phase transitions from incoherent to coherent states. Atoms interacting with the counterpropagating modes of a unidirectionally pumped high-finesse...
Collective atomic recoil lasing including friction and diffusion effects (2004)
Piovella, N., Ferraro, A., Bonifacio, R., Courteille, Ph. W., Zimmermann, C.
We extend the collective atomic recoil lasing (CARL) model including the effects of friction and diffusion forces acting on the atoms due to the presence of optical molasses fields. The results from...
Collective atomic recoil lasing including friction and diffusion effects (2004)
Robb, G.R.M., Piovella, N., Ferraro, A., Bonifacio, R., Courteille, P.W., Zimmermann, C.
We extend the collective atomic recoil lasing (CARL) model including the effects of friction and diffusion forces acting on the atoms due to the presence of optical molasses fields. The results from...
Collective atomic recoil lasing including friction and diffusion effects (2004)
Robb, G.R.M., Piovella, N., Ferraro, A., Bonifacio, R., Courteille, P.W., Zimmermann, C.
We extend the collective atomic recoil lasing (CARL) model including the effects of friction and diffusion forces acting on the atoms due to the presence of optical molasses fields. The results from...
Selfsynchronization and dissipation-induced threshold in collective atomic recoil lasing (2004)
Von Cube, C., Slama, S., Kruse, D., Zimmermann, C., Courteille, Ph. W., Robb, G. R. M., ...
Networks of globally coupled oscillators exhibit phase transitions from incoherent to coherent states. Atoms interacting with the counterpropagating modes of a unidirectionally pumped high-finesse...
New hybrid circuit breaker/current limiter with serial and parallel commutation assistance (2004)
Besrest, R., Sellier, P., Zimmermann, C.
This paper presents a new hybrid circuit breaker topology based on the use of serial and parallel semiconductors that allows to increase the supply voltage and default current with no arc, and to...
Zimmermann, C., Anson, C.E., Eckermann, A.L., Wunder, M., Fischer, G., Keilhauer, I., ...
Inorganic Chemistry, 43(2004) S.4595-4603
Collective Atomic Recoil Lasing Including Friction and Diffusion Effects (2003)
Robb, G. R. M., Piovella, N., Ferraro, A., Bonifacio, R., Courteille, Ph. W., Zimmermann, C.
We extend the Collective Atomic Recoil Lasing (CARL) model including the effects of friction and diffusion forces acting on the atoms due to the presence of optical molasses fields. The results from...
Rufer, A., Schibli, N., Chabert, C., Zimmermann, C.
A configurable converter topology is presented as front-end converter for a locomotive that can be operated as well on a high voltage ac-system as on a medium voltage dc-system. The configurable...
Observation of Lasing Mediated by Collective Atomic Recoil (2003)
Kruse, D., Von Cube, C., Zimmermann, C., Courteille, Ph. W.
We observe the buildup of a frequency-shifted reverse light field in a unidirectionally pumped high-$Q$ optical ring cavity serving as a dipole trap for cold atoms. This effect is enhanced and a...
Cold atoms in a high-Q ring-cavity (2003)
Kruse, D., Ruder, M., Benhelm, J., Von Cube, C., Zimmermann, C., Courteille, Ph. W., ...
We report the confinement of large clouds of ultra-cold 85-Rb atoms in a standing-wave dipole trap formed by the two counter-propagating modes of a high-Q ring-cavity. Studying the properties of this...
Verarbeitung und Vermarktung von ökologischem Schweinefleisch in Baden-Württemberg (2003)
Kolanoski, J., Weis, K., Zimmermann, C., Häring, A. M., Bichler, B.
Die Zielsetzung dieser Arbeit ist, Qualitätsansprüche an ökologisch erzeugtes Schweinefleisch und dessen Verarbeitungsprodukte aufzuzeigen. Dabei sollen einerseits die Qualitätsansprüche und...
Growth and reproduction of horse mackerel, Trachurus trachurus (carangidae) (2003)
Abaunza, P., Gordo, L., Karlou-Riga, C., Murta, A., Garcia Santamaria, M.T., ...
There is a broad knowledge of the growth and reproduction of Trachurus trachurus, although important gaps still exist. Horse mackerel are a long-lived species, reaching up to 40 years of age. They...
Verarbeitung und Vermarktung von ökologischem Schweinefleisch in Baden-Württemberg (2003)
Kolanoski, J., Weis, K., Zimmermann, C., Häring, A. M., Bichler, B.
Die Zielsetzung dieser Arbeit ist, Qualitätsansprüche an ökologisch erzeugtes Schweinefleisch und dessen Verarbeitungsprodukte aufzuzeigen. Dabei sollen einerseits die Qualitätsansprüche und...
Nonlinear Dynamics of a Bose-Einstein Condensate in a Magnetic Waveguide (2002)
Ott, H., Fortágh, J., Kraft, S., Günther, A., Komma, D., Zimmermann, C.
We have studied the internal and external dynamics of a Bose-Einstein condensate in an anharmonic magnetic waveguide. An oscillating condensate experiences a strong coupling between the center of...
Dynamics of a Bose-Einstein Condensate in an Anharmonic Trap (2002)
Ott, H., Fortagh, J., Zimmermann, C.
We present a theoretical model to describe the dynamics of Bose-Einstein condensates in anharmonic trapping potentials. To first approximation the center-of-mass motion is separated from the internal...
Optical Lattice in a High Finesse Ring Resonator (2002)
Nagorny, B., Elsaesser, Th., Richter, H., Hemmerich, A., Kruse, D., Zimmermann, C., ...
An optical lattice with rubidium atoms ($^{85}Rb$) is formed inside a ring resonator with a finesse of $1.8 \times 10^5$ and a large mode volume of 1.3 $mm^3$. We typically trap several times $10^6$...
Bose-Einstein Condensates in Magnetic Waveguides (2002)
Fortagh, J., Ott, H., Kraft, S., Guenther, A., Zimmermann, C.
In this article, we describe an experimental system for generating Bose-Einstein condensates and controlling the shape and motion of the condensate by using miniaturised magnetic potentials. In...
Anomalous Longitudinal Magnetic Field near the Surface of Copper Conductors (2002)
Kraft, S., Guenther, A., Ott, H., Wharam, D., Zimmermann, C., Fortagh, J.
We have used ultracold atoms to characterize the magnetic field near the surface of copper conductors at room temperature carrying currents between 0.045 A and 2 A. In addition to the usual circular...
Microelectromagnets for Trapping and Manipulating Ultracold Atomic Quantum Gases (2002)
Fortagh, J., Ott, H., Schlotterbeck, G., Zimmermann, C., Herzog, B., Wharam, D.
We describe the production and characterization of microelectromagnets made for trapping and manipulating atomic ensembles. The devices consist of 7 fabricated parallel copper conductors 3 micrometer...
Surface Effects in Magnetic Microtraps (2002)
Fortagh, J., Ott, H., Kraft, S., Zimmermann, C.
We have investigated Bose-Einstein condensates and ultra cold atoms in the vicinity of a surface of a magnetic microtrap. The atoms are prepared along copper conductors at distances to the surface...
Jimenez-Boj, E, Schett, G, Kedersha, N, Zimmermann, C, Hoefler, E, Smolen, J, ...
No abstract available.
Entwurf von LVDS-I/O-Zellen für 1.25Gb/s (2002)
Vogel, U., Bunk, G., Landwehr, M., Zimmermann, C., Steinert, M., Iwamoto, T.
LVDS hat sich als ein Standard für Datenübertragungsanwendungen auf Chips, Boards, Rückverdrahtungs- und Kabelverbindungen in unterschiedlichen Applikationen (z. B. SONET/SDH) entwickelt. Dieser...
Verfahren zum Fuegen eines Werkstueckes aus Metallschaum (2002)
Weber, M., Baumeister, J., Erhardt, A., Zimmermann, C., Tichter, M., Petring, D.
DE 19859933 A UPAB: 20000811 NOVELTY - Foamed material workpieces (1) are welded to one another or to solid workpieces, using a pore-forming medium to form a porous solidified joint. DETAILED...
On the design of enhancement cavities for second harmonic generation (2001)
Enhancement cavities using off-axis spherical mirrors allow the elliptical Gaussian beams from semiconductor diode lasers to be matched directly to the optimum beam profile for frequency conversion...
Bose-Einstein Condensation in a Surface Micro Trap (2001)
Ott, H., Fortagh, J., Schlotterbeck, G., Grossmann, A., Zimmermann, C.
Bose-Einstein condensation has been achieved in a magnetic surface micro trap with 4x10^5 87Rb atoms. The strongly anisotropic trapping potential is generated by a microstructure which consists of...
Analysis of anti-Ro52 antibodies in sera of healthy subjects (2001)
Zimmermann, C, Fabini, G, Höfler, E, Smolen, JS, Steiner, G
No abstract available.
Enhanced absorption Hanle effect on the Fg=F->Fe=F+1 closed transitions (2001)
Renzoni, F., Zimmermann, C., Verkerk, P., Arimondo, E.
We analyse the Hanle effect on a closed $F_g\to F_e=F_g+1$ transition. Two configurations are examined, for linear- and circular-polarized laser radiation, with the applied magnetic field collinear...
The European Association for Communication in Healthcare (editorial) (2001)
Bensing, J., Dulmen, S. Van, Kallerup, H., Visser, Adriaan, Borrell, F., Finset, A., ...
The European Association for Communication in Healthcare (2001)
Van Dulmen, S, Kallerup, H, Visser, A, Borrell, F, Finset, A, ...
Bose-Einstein Condensation in a Surface Microtrap (2001)
Fortagh, J., Grossmann, A., Ott, H., Schlotterbeck, G., Zimmermann, C.
Gleisberg, F., Wonneberger, W., Schloeder, U., Zimmermann, C.
One-particle properties of non-interacting Fermions in a one-dimensional harmonic trap and at zero temperature are studied. Exact expressions and asymptotic results for large Fermion number N are...
Resonance-enhanced two-photon spectroscopy of magnetically trapped atomic hydrogen (2000)
Hijmans, T.W., Pinkse, P.W.H., Mosk, A.P., Weidemuller, M., Reynolds, M.W., Walraven, J.T.M., ...
LVDS I/O cells with rail-to-rail receiver input for SONET/SDH at 1.25 Gb/s (2000)
Vogel, U., Jähne, R., Ulbricht, S., Bunk, G., Steinert, M., Zimmermann, C., ...
Low voltage differential signaling (LVDS) has developed as a data transmission standard for on-chip, on-board/backplane or cable connections. This paper reports design criteria and measurement...
Herminjard, J., Zimmermann, C., Monnier, R.
In this article the development and realization of a 8 kW battery charger with Power Factor Correction (PFC) is described. The converter consists of two parts: The first part is an AC/DC converter...
Die Konkurrenzfähigkeit moderner Kraftfahrzeuge kann nur durch den Einsatz von Elektronikkomponenten gewährleistet werden. Zur Steuerung von Aktoren erlangen integrierte Leistungsschaltungen als...
Resonance enhanced two-photon spectroscopy of magnetically trapped atomic hydrogen (1997)
Pinkse, P.J.M., Mosk, A.J., Weidemuller, M., Reynolds, M.W., Hijmans, T.W., Walraven, J.T.M., ...
Magnetisch gespeicherter Wasserstoff an der Grenze zur Bose-Einstein Kondenstioan (1997)
Weidemuller, M., Pinkse, P.J.M., Mosk, A.J., Reynolds, M.W., Hijmans, T.W., Walraven, J.T.M., ...
Gogl, D., Burbach, G., Verbeck, M., Zimmermann, C.
A thin-film SIMOX technology has been used for fabrication of a single-polysilicon EEPROM cell suitable for high-temperature applications. The two transistor cell is composed of a select transistor...
This paper describes techniques and methods used to realize a seventh order switched-capacitor low pass filter in SIMOX technology. The filter has Bessel characteristic and a 3dB-bandwidth of 20 Hz...
An intelligent vertical trench DMOS on SIMOX-substrate (1996)
Vogt, F.P., Vogt, H., Brücker, J., Zimmermann, C., Richter, F.
This paper desribes first results of a monolithically integrated smart power device which uses a vertical Trench-DMOS as a power switch and a signal and control circuit fabricated in a SOI-CMOS...
Trapping Atoms in a Dark Optical Lattice (1995)
Hemmerich, A., Weidemuller, M., Esslinger, T., Zimmermann, C., Hansch, T.
Trapping Atoms in a Dark Optical Lattice (1995)
Hemmerich, A., Weidemuller, M., Esslinger, T., Zimmermann, C., Hansch, T.
A compact grating-stabilized diode laser system for atomic physics (1995)
Ricci, L., Weidemuller, M., Esslinger, T., Zimmermann, C., Hansch, T.
Verbeck, M., Bahr, J., Burbach, G., Gogl, D., Sikora, A., ...
This paper describes techniques and methods used to realize a seventh order switched capacitor low pass filter in SIMOX technology. The filter has bessel characteristic and a 3dB-bandwidth of 20Hz at...
Ein monolithischer PWM-Dimmer für Automobilanwendungen in SIMOX-Technologie (1995)
Zimmermann, C., Vogt, F.P., Vogt, H., Müsch, E.
In diesem Beitrag wurde ein monolithischer PWM-Dimmer für Automobilanwendungen vorgestellt. Aufgrund der dielektrischen Isolation durch SIMOX besitzt die integrierte Leistungsschaltung eine hohe...
Light dependence of partially depleted SOI-MOSFETs using SIMOX substrates (1995)
Werner, R., Zimmermann, C., Kalz, A.
The optical dependence of partially depleted MOSFET's on SIMOX substrates is investigated. Measurements of the electrical and optical characteristics are presented. In order to make use of the...
Light dependence of partially depleted SOI-MOSFET's unsing SIMOX substrates (1995)
Werner, R., Zimmermann, C., Kalz, A.
The optical dependence of partially depleted MOS-FET's on SIMOX substrates is investigated. Measurements of the electrical and optical characteristics are presented. In order to make use of the...
Hochtemperaturtaugliche Mikrosystemkomponenten in SOI-Technologie (1995)
Verbeck, M., Burbach, G., Bahr, J., Werner, R., Zimmermann, C.
Durch den Einsatz der SIMOX-Technologie sind hochtemperaturtaugliche Schaltungen für den Einsatz bei Betriebstemperaturen bis 300øC möglich. Durch ein spezielles Transistor Layout werden außerdem...
Raising The, C. Zimmermann, C. Zimmermann, V. Cahill, V. Cahill
We present a proposal for an architecture supporting distributed objects exhibiting soft real-time behaviour. This support is aimed directly at the field of distributed multimedia applications. Since...
DYNAMIC TENSILE TESTING WITH A LARGE SCALE 33 MJ ROTATING DISK IMPACT MACHINE (1985)
Kussmaul, K., Zimmermann, C., Issler, W.
A recently completed testing machine for dynamic tensile tests is described. The machine consists essentially of a pendulum which holds the specimen and a large steel disk with a double striking nose...
Kussmaul, K., Zimmermann, C., Demler, T., Kraemer, D.
The design of a large rotating disk impact machine induced the development of various new measurement techniques for dynamic loading conditions. This comprises the registration of the material...
DYNAMIC TENSILE TESTING WITH A LARGE SCALE 33 MJ ROTATING DISK IMPACT MACHINE (1985)
Kussmaul, K., Zimmermann, C., Issler, W.
A recently completed testing machine for dynamic tensile tests is described. The machine consists essentially of a pendulum which holds the specimen and a large steel disk with a double striking nose...
Kussmaul, K., Zimmermann, C., Demler, T., Kraemer, D.
The design of a large rotating disk impact machine induced the development of various new measurement techniques for dynamic loading conditions. This comprises the registration of the material...
DYNAMIC TENSILE TESTING WITH A LARGE SCALE 33 MJ ROTATING DISK IMPACT MACHINE (1985)
Kussmaul, K., Zimmermann, C., Issler, W.
A recently completed testing machine for dynamic tensile tests is described. The machine consists essentially of a pendulum which holds the specimen and a large steel disk with a double striking nose...
Kussmaul, K., Zimmermann, C., Demler, T., Kraemer, D.
The design of a large rotating disk impact machine induced the development of various new measurement techniques for dynamic loading conditions. This comprises the registration of the material...
Antiviral immune responses in CTLA4 transgenic mice.
Zimmermann, C, Seiler, P, Lane, P, Zinkernagel, R M
The role of B7 binding CD28 in the regulation of T- and B-cell responses against viral antigens was assessed in transgenic mice expressing soluble CTLA4-Hgamma1 (CTLA4-Ig tg mice) that blocks B7-CD28...
Antiviral immune responses in CTLA4 transgenic mice.
Zimmermann, C, Seiler, P, Lane, P, Zinkernagel, R M
The role of B7 binding CD28 in the regulation of T- and B-cell responses against viral antigens was assessed in transgenic mice expressing soluble CTLA4-Hgamma1 (CTLA4-Ig tg mice) that blocks B7-CD28...
International Transmission of the Business Cycle in a Multi-Sector Model.
Multi-countru models have not been very successful in replicating features of the international transmission of business cycles. Standard models predict cross-country correlations of output and...
International Business Cycles: What Are the Facts?
Ambler, S., Cardia, E., Zimmermann, C.
Modern Business cycle theory involves developing models that explain stylized facts. For this strategy to be success, these facts should be we established. In this paper, we focus on the stylized...