Doppler broadening and collisional relaxation effects in a lasing-without-inversion experiment.
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In the early experiments on optical pumping and coherent population trapping (''dark resonances'') increasing buffer gas pressure enhances the effect. In our recent lasing-without-inversion experiments, based on population trapping, we find the opposite behavior, namely, decreasing atomic coherence with increasing buffer gas pressure. We provide a theoretical explanation of this result in agreement with experiment. 1995 The American Physical Society.
author list (cited authors)
Graf, M., Arimondo, E., Fry, E. S., Nikonov, D. E., Padmabandu, G. G., Scully, M. O., & Zhu, S. Y.
complete list of authors
Graf, M||Arimondo, E||Fry, ES||Nikonov, DE||Padmabandu, GG||Scully, MO||Zhu, SY