Laser Cooling

Laser Cooling and Trapping Group

 

Recent Publications:

Atomic Physics:

1998

·                             Quantum reflection of atoms from a periodic dipole potential,  N. Friedman, R. Ozeri, and N. Davidson, J. Opt. Soc. Am. B 15, 1749 (1998).

1999

·                             Compression of a cold atomic cloud by on-resonance laser light, L. Khaykovich and N. Davidson, J. Opt. Soc. Am. B 16, 702 (1999).

·                             Long spin relaxation times in a single-beam blue-detuned optical trap,  R. Ozeri, L. Khaykovich and N. Davidson, Phys. Rev. A 59, R1750 (1999).

·                             Saturation of the weak probe amplification in a strongly driven cold and dense atomic cloud,  L. Khaykovich, N. Friedman, and N. Davidson, Eur. Phys. J. D 7, 467 (1999).

·                             Single-beam dark optical traps for cold atoms, N. Friedman, L. Khaykovich, R. Ozeri, and N. Davidson, in Optics in 1999, Opt. Phot. News. 10 No. 12, 36-37 (1999). (PDF)

·                             Compression of cold atoms to very high densities in a novel rotating-beam blue-detuned optical dipole trap, N. Friedman, L. Khaykovich, R. Ozeri, and N. Davidson, Phys. Rev. A61, 031403(R) (2000).

2000

·                             Adiabatic focusing of cold atoms in a blue-detuned laser standing wave, L. Khaykovich, and N. Davidson, Appl. Phys. B 70, 683 (2000).

·                             Ultrasensitive two-photon spectroscopy based on long spin-relaxation time in a dark optical trap, L, Khaykovich, N. Friedman, S. Balouschev, D. Fathi, and N. Davidson, Europhys. Lett., 50, 454 (2000).

·                             Tunable and frequency stabilized diode-laser with Doppler-free two-photon Zeeman lock, S. Baluschev, N. Friedman, L. Khaykovich, D. Fathi, B. Johns, and N. Davidson, Appl. Opt. 39, 4970 (2000).

·                              Large volume single-beam dark optical trap for atoms using binary phase elements, R. Ozeri, L. Khaykovich, N. Friedman, and N. Davidson, J. Opt. Soc. Am B 17, 1113-1116 (2000).

2001

·                             Observation of chaotic and regular dynamics in atom-optics billiards, N. Friedman, A. Kaplan, D. Carasso, and N. Davidson, Phys. Rev. Lett. 86, 1518 (2001).

·                             Observation of Islands of Stability in Soft Wall Atom-Optics Billiards, A. Kaplan, N. Friedman, M. Andersen, and N. Davidson, Phys. Rev. Lett. 87, 274101 (2001).

2002

·                              Excitation Spectrum of a Bose-Einstein Condensate, J. Steinhauer, R. Ozeri, N. Katz, and N. Davidson, Phys. Rev. Lett. 88, 120407 (2002).

·                             Stable islands in chaotic atom-optics billiards, caused by curved trajectories, M. F. Andersen, A. Kaplan, N. Friedman and N. Davidson, J. Phys. B: At. Mol. Opt. Phys. 35 (2002) 2183.

·                             Suppression of inhomogeneous broadening in rf spectroscopy of optically trapped atoms, A. Kaplan, M. F. Andersen, and N. Davidson, Phys. Rev. A 66, 045401  (2002).

·                              Direct observation of the phonon energy in a Bose-Einstein condensate by tomographic imaging, R. Ozeri, J. Steinhauer, N. Katz, and N. Davidson, Phys. Rev. Lett. 88, 220401 (2002).

·                             Optimized single-beam dark optical trap, A. Kaplan, N. Friedman, N. Davidson, J. Opt. Soc. Am B 19, 1233 (2002).

·                             Beliaev damping of quasi-particles in a Bose-Einstein condensate, N. Katz, J. Steinhauer, R. Ozeri, N. Davidson, Phys. Rev. Lett. 89, 2120401 (2002).

·                              Dark Optical Traps for Cold Atoms, N. Friedman, A. Kaplan, N. Davidson, Adv. At. Mol. Opt. Phys. 48, 99 (2002).

·                             Stable regions and singular trajectories in chaotic soft wall billiards, A. Kaplan, N. Friedman, M. Andersen, and N. Davidson, nlin.CD/0210075.

2003

·                              Echo spectroscopy and quantum stability of trapped atoms, M. F. Andersen, A. Kaplan, and N. Davidson, Phys. Rev. Lett. 90, 023001 (2003).

·                             Bragg spectroscopy of the multi-branch Bogoliubov spectrum of elongated Bose-Einstein condensates, J. Steinhauer, N. Katz, R. Ozeri, N. Davidson, C. Tozzo, F. Dalfovo, Phys. Rev. Lett. 90, 060404 (2003).

·                              Three-wave mixing of Bogoliubov quasi-particles in a Bose condensate , R. Ozeri, N. Katz, J. Steinhauer, and N. Davidson, Phys. Rev. Lett. 90, 170401 (2003).

·                             Suppression of Dephasing of Optically Trapped Atoms, M. F. Andersen, A. Kaplan, T. Grünzweig, N. Davidson, quant-ph/0307214.

·                             The Roton in a Bose-Einstein Condensate,  J. Steinhauer, R. Ozeri and N. Davidson, cond-mat/0303375.

·                             Decoherence and dephasing in strongly driven colliding Bose-Einstein condensates, N. Katz, R. Ozeri, E. Rowen, E. Gershnabel and N. Davidson, cond-mat/0308492.

·                             Echo spectroscopy and Atom Optics Billiards, M. F. Andersen, A. Kaplan, T. Grünzweig, N. Davidson, Communications in Nonlinear Science and Numerical Simulation 8, 289 (2003).

·                             Echo spectroscopy of bulk Bogoliubov excitations in trapped Bose-Einstein condensates, E. Gershnabel, N. Katz, R. Ozeri, E. Rowen, J. Steinhauer and N. Davidson, cond-mat/0309584.

 

 

   

Optics:

·                             Fabrication of binary phase surface relief optical elements by selective evaporation of dielectric layers, N. Davidson, R. Ozeri, and R. Baron, Rev. of Sci. Inst. 70, 1264 (1999). (PDF)

·                             Concentration of diffuse linear light sources with continuous optical elements, N. Davidson and L. Khaykovich, Appl. Opt. 3, 3593 (1999).

·                             Discontinuous phase elements for transverse for transverse mode selection in laser resonators, R. Oron, Y. Danziger, N. Davidson, A. A. Friesem, and E. Hasman Appl. Phys. Lett. 74, 1373 (1999).

·                             Tree dimensional optical metrology with color-coded extended depth of focus, E. Hasman, S. Keren, N. Davidson, and A. A. Friesem, Opt. Lett. 24, 439 (1999).

·                             Formation of helical laser modes with ultra-cavity spiral optical elements, R. Oron, Y. Danziger, N. Davidson, A. A. Friesem, and E. Hasman, Opt. Comm. in press (1999).

·                             Laser mode discrimination with intra-cavity spiral optical elements, R. Oron, Y. Danziger, N. Davidson, A. A. Friesem and E. Hasman, Opt. Comm. 169, 115-121 (1999).

·                             High-resolution spectrometers for diffuse light using anamorphic concentration, N. Davidson, L. Khaykovich, and E. Hasman, Opt. Lett. 24, 1835-1837 (1999).

·                             High power single mode laser operation with intracavity phase elements, R. Oron, N. Davidson, A. A. Friesem, and E. Hasman, in Optics in 1999, Opt. Phot. News. 10 No. 12, 19-20 (1999).

·                             Anomaly in high numerical aperture diffractive focusing lens, R. Oron, J. L. Guedalia, N. Davidson, A. A. Friesem, and E. Hasman, Opt. Lett. 25, 439-441(2000).

·                             Continuous phase elements can improve laser beam quality, R. Oron, N. Davidson, A. A. Friesem, and E. Hasman, Opt. Lett. 25, 939-941 (2000).

·                             Efficient formation of pure helical laser beams, R. Oron, N. Davidson, A. A. Friesem, and E. Hasman, Opt. Comm. 182, 205-208 (2000).

·                             Anamorphic concentration of solar radiation beyond the one-dimensional thermodynamic limit, N. Davidson, L. Khaykovich, and E. Hasman, Appl. Opt.39, 3963-3967 (2000).

·                             The formation of laser beams with pure azimuthal or radial polarization, R. Oron, S. Blit, N. Davidson, A. A. Friesem, Z. Bomzon, and E. Hasman, Appl. Phys. Lett., in press (2000).

·                             Achromatic phase retarder by slanted illumination of a dielectric grating with period comparable to the wavelength, N. Bokor, R. Shechter, N. Davidson, A. A. Friesem, and E. Hasman, submitted to Appl. Opt (2000).

·                             Beam shaping with diffuse light using a single reflection, N. Davidson, and N. Bokor, submitted to Appl. Opt (2000).

·                             An acousto-optic scanning system with very fast non-linear scans,  N. Friedman, A. Kaplan, and N. Davidson, Opt. Lett. 25, 1762 (2000). (Abstract, PDF)

·                             Acousto-optic lens with very fast focus scanning, Ariel Kaplan, Nir Friedman, and Nir Davidson, Opt. Lett. 26, 1078 (2001). (Abstract, PDF)