Quantum Theory of a Nondegenerate Two-Photon Laser |
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| Authors: | Guo-jian YANO Zu-qia HUANG Gang HU |
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| Affiliation: | 1. Institute of LOW Ehetgy Nuelear Physlcs, Beljlng Normal University, Beijlng 100875, China;2. Center of Theoretlcal Physics, CCAST (World Laboratory), Beijing;3. Department of Phydics, Beijing Normal Unlverslty, Beijing 100875, China |
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| Abstract: | Laser actions and photon statistics far a nondegenerate two-photon laser in an effective three-level stomic system with arbitrary detunlng are Investigated both semiclassically and quantum meehmleally, Due to the two-photon effect, the radiation field easily displays a sub-Foissonian statlstieal distribution. The laser actions for a two-photon and a sihgle-photon loss mechanisms are compared. It is found that the detailed balance in the single-photon loss mechanism can still be preserved in the case that a first-order phase transtion takes place. |
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