Pulse compression and threshold decrease in high- repetition-rate doubly Q-switched intracavity optical parametric oscillator

Abstract

By using $\mathrm{Rb}\mathrm{Ti}\mathrm{O}\mathrm{P}{\mathrm{O}}_4$ (RTP) crystals as an electro-optic (EO) modulator and ${\mathrm{Cr}}^{4+}:\mathrm{YAG}$ saturable absorber as a passive Q switch, a high repetition rate doubly Q-switched intracavity optical parametric oscillator (IOPO) is realized. In comparison to an EO Q-switched IOPO, the lower threshold energy, the higher output energy, the narrower pulse width, and the higher conversion efficiency from the doubly Q-switched IOPO can be obtained. By considering the gradual loss from the delayed switched time of the EO switch, the coupled rate equations of doubly Q-switched IOPO under the assumption of the uniform distributions of the intracavity photon densities are given, and the numerical solution of the equations fits the experimental data well.

© 2007 Optical Society of America

Dual-loss-modulated Q-switched mode-locked laser intracavity pumped temperature-tuned subnanosecond KTiOPO₄ optical parametric oscillator

Hongwei Chu, Jia Zhao, Kejian Yang, Shengzhi Zhao, Dechun Li, Tao Li, Guiqiu Li, and Wenchao Qiao
Appl. Opt. 54(35) 10517-10523 (2015)

Efficient RTP-based OPO intracavity pumped by an acousto-optic Q-switched Nd:YVO₄ laser

Yanmin Duan, Haiyong Zhu, Yanlin Ye, Dong Zhang, Ge Zhang, and Dingyuan Tang
Opt. Lett. 39(5) 1314-1317 (2014)

Passively Q-switched self-frequency-doubled Nd³⁺:GdCa₄O(BO₃)₃ laser

Xingyu Zhang, Shengzhi Zhao, Qingpu Wang, Shujun Zhang, Lianke Sun, Xunmin Liu, Shaojun Zhang, and Huanchu Chen
J. Opt. Soc. Am. B 18(6) 770-779 (2001)

Passively Q-switched 1.57-µm intracavity optical parametric oscillator

Yuri Yashkir and Henry M. van Driel
Appl. Opt. 38(12) 2554-2559 (1999)

Compact efficient eye-safe intracavity optical parametric oscillator with a shared cavity configuration

Y. F. Chen, K. W. Su, Y. T. Chang, and W. C. Yen
Appl. Opt. 46(17) 3597-3601 (2007)