简并双光子激光的朗之万理论

Langevinian Theory of Degenerate Two-Photon Laser

本文运用朗之万方法研究具有双光子损失机制的简并双光子激光。结果表明,这类激光不但具有比单光子激光大得多的稳态平均光子数,而且具有大得多的激光线宽。

In this paper Haken's theory is applied for solving the problem of degenerate two-photon lasers. For the exactly soluble case of unidirectional ring laser with a homogeneous broadened line, the frequency shift relation, the critical and threshold value of inversion, the phase transition behavior and the features of the two-photon lasers with injected signal are analysed.