Pulse compression and threshold decrease in high- repetition-rate doubly Q-switched intracavity optical parametric oscillator
作者： Jing Wang , Shengzhi Zhao , Kejian Yang , Lei Dong , Guiqiu Li
关键词: Rate equation 、 Nonlinear optics 、 Physics 、 Optical parametric oscillator 、 Energy conversion efficiency 、 Pulse compression 、 Q-switching 、 Saturable absorption 、 Optics 、 Pulse-width modulation
摘要: By using RbTiOPO4 (RTP) crystals as an electro-optic (EO) modulator and Cr4+:YAG saturable absorber a passive Q switch, high repetition rate doubly Q-switched intracavity optical parametric oscillator (IOPO) is realized. In comparison to EO IOPO, the lower threshold energy, higher output narrower pulse width, conversion efficiency from IOPO can be obtained. considering gradual loss delayed switched time of coupled equations under assumption uniform distributions photon densities are given, numerical solution fits experimental data well.
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