Semiclassical consideration of laser cooling of unbound atoms in nondissipative optical lattice

Natalia A. Matveeva; Alexey V. Taichenachev

doi:10.1117/12.752256

19 July 2007 Semiclassical consideration of laser cooling of unbound atoms in nondissipative optical lattice

Natalia A. Matveeva, Alexey V. Taichenachev

Proceedings Volume 6726, ICONO 2007: Physics of Intense and Superintense Laser Fields; Attosecond Pulses; Quantum and Atomic Optics; and Engineering of Quantum Information; 67261Z (2007) https://doi.org/10.1117/12.752256
Event: The International Conference on Coherent and Nonlinear Optics, 2007, Minsk, Belarus

Abstract

The semiclassical theory of laser cooling is applied for the analysis of cooling of unbound atoms with the values of the ground and exited state angular moments 1/2 in a one-dimensional nondissipative optical lattice. We show that in the low-saturation limit with respect to the pumping field a qualitative interpretation of the cooling mechanisms can be made by the consideration of effective two-level system of the ground-state sublevels. It is clarified that in the limit of weak Raman transitions the cooling mechanism is similar to the Doppler mechanism, which is known in the theory of two-level atom. In the limit of strong Raman transitions the cooling mechanism is similar to the known Sisyphus mechanism. In the slow atom approximation the analytical expressions for the coefficients of friction, spontaneous and induced diffusion are given, and the kinetic temperature is estimated.

Citation Download Citation

Natalia A. Matveeva and Alexey V. Taichenachev "Semiclassical consideration of laser cooling of unbound atoms in nondissipative optical lattice", Proc. SPIE 6726, ICONO 2007: Physics of Intense and Superintense Laser Fields; Attosecond Pulses; Quantum and Atomic Optics; and Engineering of Quantum Information, 67261Z (19 July 2007); https://doi.org/10.1117/12.752256

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