2 papers
quant-ph2000
Inversionless gain in a three-level system driven by a strong field and collisions
A. K. Popov, S. A. Myslivets, Gao Jin-yue +2
Inversionless gain in a three-level system driven by a strong external field and by collisions with a buffer gas is investigated. The mechanism of populating of the upper laser lev…
physics.optics2000
Sub-Doppler resolution with double coherently driving fields
Po Dong, A. K. Popov, Tang Sing Hai +1
We propose a four-level model where sub-Doppler resolution as well as enhanced absorption of a weak probe field are realized by using two coherently driving fields. We show that sp…