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Title: Coherent amplification in laser cooling and trapping

Abstract

The optical scattering force, behind Doppler cooling and magneto-optical trapping, may be amplified without incurring additional spontaneous emission by the state-dependent coherent deflection produced by a pulsed or chirped laser field. At some cost in experimental complexity, amplified forces allow efficient cooling on narrow transitions and permit the compact deceleration of beams with reduced transverse heating, and will be of interest for molecules and atoms with open level schemes where losses following spontaneous emission would otherwise prevail. We present a general analysis of the amplification scheme, and propose an optimized, dynamic cooling scheme that allows the temperature of a sample to be reduced by around a factor of two per excited state lifetime.

Authors:
; ;  [1];  [2]
  1. School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)
  2. (United Kingdom)
Publication Date:
OSTI Identifier:
20786946
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.033409; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ACCELERATION; AMPLIFICATION; ATOMS; COOLING; EMISSION; EXCITED STATES; HEATING; LASER RADIATION; LIFETIME; LIGHT SCATTERING; MAGNETO-OPTICAL EFFECTS; MOLECULES; RADIATION PRESSURE; TRAPPING

Citation Formats

Freegarde, Tim, Daniell, Geoff, Segal, Danny, and Quantum Optics and Laser Science, Imperial College, London SW7 2BZ. Coherent amplification in laser cooling and trapping. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Freegarde, Tim, Daniell, Geoff, Segal, Danny, & Quantum Optics and Laser Science, Imperial College, London SW7 2BZ. Coherent amplification in laser cooling and trapping. United States. doi:10.1103/PHYSREVA.73.0.
Freegarde, Tim, Daniell, Geoff, Segal, Danny, and Quantum Optics and Laser Science, Imperial College, London SW7 2BZ. Wed . "Coherent amplification in laser cooling and trapping". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786946,
title = {Coherent amplification in laser cooling and trapping},
author = {Freegarde, Tim and Daniell, Geoff and Segal, Danny and Quantum Optics and Laser Science, Imperial College, London SW7 2BZ},
abstractNote = {The optical scattering force, behind Doppler cooling and magneto-optical trapping, may be amplified without incurring additional spontaneous emission by the state-dependent coherent deflection produced by a pulsed or chirped laser field. At some cost in experimental complexity, amplified forces allow efficient cooling on narrow transitions and permit the compact deceleration of beams with reduced transverse heating, and will be of interest for molecules and atoms with open level schemes where losses following spontaneous emission would otherwise prevail. We present a general analysis of the amplification scheme, and propose an optimized, dynamic cooling scheme that allows the temperature of a sample to be reduced by around a factor of two per excited state lifetime.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}