Observation of sub-Doppler absorption in the Λ-type three-level Doppler-broadened cesium system
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- Wang, J., Wang, Y., Yan, S. et al. Appl Phys B (2004) 78: 217. doi:10.1007/s00340-003-1353-x
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Thanks to the atomic coherence in the coupling-laser-driven atomic system, sub-Doppler absorption has been observed in Doppler-broadened cesium vapor cell via the Λ-type three-level scheme. The linewidth of the sub-Doppler absorption peak becomes narrower while the frequency detuning of coupling laser increases. The results are in agreement with the theoretical prediction by G. Vemuri et al.