Abstract

A differential two-photon spectroscopic technique for measurement of atomic temperatures in a working magneto-optical trap was demonstrated. We performed experimental and theoretical studies of two-photon resonances on Rydberg transitions $2{\mathrm{S}}_{1/2}-2{\mathrm{P}}_{3/2}-58\mathrm{S}$ in cold ${}^7\mathrm{Li}$ atoms by using counter- and co-propagating laser beams. By analyzing the spectral shapes, a dependence of Rabi broadening and Doppler broadening on total intensity of cooling laser beams was obtained. We measured the temperature of ${}^7\mathrm{Li}$ atoms in the range from 0.25 to 0.75 mK. Our theoretical and experimental results are in reasonably good agreement. The developed approach for temperature measurements can be applied to cold atoms in different traps, including confined hydrogen and antihydrogen atoms.

© 2018 Optical Society of America

Velocity-tunable magneto-optical-trap-based cold Cs atomic beam

He Wang and Walter F. Buell
J. Opt. Soc. Am. B 20(10) 2025-2030 (2003)

Recoil-induced resonance spectroscopy and nondestructive temperature measurement of cold rubidium atoms inside an integrating sphere

Wenli Wang, Jianliao Deng, and Yuzhu Wang
J. Opt. Soc. Am. B 32(12) 2441-2447 (2015)

Generation of an intense cold-atom beam from a pyramidal magneto-optical trap: experiment and simulation

James M. Kohel, Jaime Ramirez-Serrano, Robert J. Thompson, Lute Maleki, Joshua L. Bliss, and Kenneth G. Libbrecht
J. Opt. Soc. Am. B 20(6) 1161-1168 (2003)

Atomic density and temperature distributions in magneto-optical traps

A. S. Arnold and P. J. Manson
J. Opt. Soc. Am. B 17(4) 497-506 (2000)

Two-photon excitation of launched cold atoms in flight

Rene Gonzalez, Eduardo Alejandro, Emma Erwin, and Anne L. Goodsell
J. Opt. Soc. Am. B 34(6) 1090-1096 (2017)