Stothard David J M, Dunn Malcolm H
The J. F. Allen Physics Laboratories, School of Physics and Astronomy, University of St. Andrews, Fife, U.K.
Opt Express. 2010 Jan 18;18(2):1336-48. doi: 10.1364/OE.18.001336.
We report a solution to the long standing problem of the occurrence of spontaneous and long-lived bursts of relaxation oscillations which occur when a continuous-wave optical parametric oscillator is operated within the cavity of the parent pump-laser. By placing a second nonlinear crystal within the pump-wave cavity for the purpose of second-harmonic-generation of the pump-wave the additional nonlinear loss thereby arising due to up-conversion effectively suppresses the relaxation oscillations with very little reduction in down-converted power.
我们报道了一种解决长期存在问题的方法，该问题是当连续波光参量振荡器在母泵浦激光器的腔内运行时会出现自发且持久的弛豫振荡爆发。通过在泵浦波腔内放置第二个非线性晶体以对泵浦波进行二次谐波产生，由此因上转换而产生的额外非线性损耗有效地抑制了弛豫振荡，同时下转换功率仅有很小的降低。
