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Acta Physica Sinica

双光子双模激光的朗之万理论

Hu Xiangming, 华中师范大学应用物理研究所,武汉430070

Published Jan 1, 1995• 0 citations
Publisher

Abstract

Mode coupling of a two-photon two-mode laser operating near above threshold is discussed with Langevin quantum theory. Characteristics of the coupling shows not only the mutual enhancement of the two modes, as well as the enhancement of mode 2 with suppre
DOI
10.7498/aps.44.1921

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我们导出方程并且学习二光子的激光，在洞的电磁的地被协调地准备的三水平的原子和古典地在驾驶注入了洞的串联的非线性的动力学。如此的一个系统的动态方程被使用量 Langevin 操作员的技术导出，然后在不同开车条件下面数字地被学习。结果在某些条件下面显示出那二光子的激光能产生的串联混乱，加倍的时期，周期、稳定、双稳态的状态。混乱能被原子人口，原子连贯，和注射的古典地禁止。另外，没有混乱发生在光双性人稳定性。

理论物理通讯：英文版•Jan 1, 2006•0 citations
Mode coupling of a two-photon two-mode laser operating near above threshold is discussed with Langevin quantum theory. Characteristics of the coupling shows not only the mutual enhancement of the two modes, as well as the enhancement of mode 2 with suppressing of mode 1, but also the enhancement of mode 1 with sap-pressing of mode 2, as well as the enhancement of one mode with the other mode not being influenced The characteristics depend both on the detunings of the two modes and on the initial populations of the three atomic levels.
A quantum Langevin theory of whispering-gallery-mode microsphere laser theory is developed. The linear and nonlinear analysis are made for laser operation below and above the threshold. In these analysis, corresponding to the specific property of microsphere, the effect of inversion fluctuation is treated. The coherence functions of laser field are calculated, and the intensity, the amplitude fluctuation and the linewidth of the field are obtained, which are connected with the enhancement factor of whispering-gallery-mode microsphere. It is shown that the strong couple and strong pumping are useful for the amplification of intensity and the decrease of linewidth below the threshold. It is also shown that, for the laser action above threshold, the variances of photon number and the linewidth of internal field are related to the enhancement factor and the square of the enhancement factor, respectively.
我们导出方程并且学习二光子的激光，在洞的电磁的地被协调地准备的三水平的原子和古典地在驾驶注入了洞的串联的非线性的动力学。如此的一个系统的动态方程被使用量 Langevin 操作员的技术导出，然后在不同开车条件下面数字地被学习。结果在某些条件下面显示出那二光子的激光能产生的串联混乱，加倍的时期，周期、稳定、双稳态的状态。混乱能被原子人口，原子连贯，和注射的古典地禁止。另外，没有混乱发生在光双性人稳定性。