| 电子俘获材料的红外最小可激发阈值 |
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| 作者单位： | Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China |
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| 摘 要： |
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Steady-state Behaviour of a Three-level Ladder Atomic System with Incoherent Population Pumping in a Squeezed Vacuum |
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| CHEN Zhaoyang,DU Chunguang,ZHANG Jingtao,XU Zhizhan. Steady-state Behaviour of a Three-level Ladder Atomic System with Incoherent Population Pumping in a Squeezed Vacuum[J]. Chinese Optics Letters, 1999, 26(3) |
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| Authors: | CHEN Zhaoyang DU Chunguang ZHANG Jingtao XU Zhizhan |
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| Abstract: | A study is made of the steady-state populations of a three-level ladder atom in a squeezed vacuum, driven by a superposition of a monochromatic laser wave with incoherent population pumping. Using the density matrix equations for the system, the steady-state populations are calculated numerically and shown graphically as functions of two-photon detuning for various cases of the squeezed vacuum and different incoherent pump rates. It is shown that the incoherent population pumping tends to greatly decrease the two-photon absorption from the squeezed vacuum. |
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| Keywords: | three-level ladder atom steady-state behaviour squeezed vacuum incoherent population pumping |
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