PPMgLN中红外宽调谐脉冲光参变振荡器

林洪沂; 黄晓桦; 许英朝; 朱文章

doi:doi:10.3788/lop52.021402

激光与光电子学进展, 2015, 52 (2): 021402, 网络出版: 2015-01-20

PPMgLN中红外宽调谐脉冲光参变振荡器下载： 546次

Mid-infrared Tunable Pulsed Optical Parametric Oscillator Based on PPMgLN

论文大纲

林洪沂 ^1,2,*黄晓桦 ^1,2许英朝 ^1,2朱文章 ^1,2

作者单位

¹ 厦门理工学院光电与通信工程学院, 福建厦门 361024

² 福建省高校光电技术重点实验室, 福建厦门 361024

激光器光参变振荡器中红外激光可调谐激光器 PPMgLN 晶体 lasers optical parametric oscillator mid-infrared laser tunable laser PPMgLN crystal

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摘要

采用半导体激光器(LD)端面抽运声光调Q 的Nd:YVO4激光器做为抽运源，选用周期性极化掺氧化镁铌酸锂晶体(PPMgLN)，通过优化抽运光光束质量和模式匹配，获得了中红外光参变振荡器。实验发现，对于确定的LD 抽运功率，当重复频率较小，输出功率随着重复频率的增加而增加，但是达到某一重复频率时，输出功率便随着重复频率的增加而减少。改变PPMgLN 晶体的周期，实现了中红外2.95~4.16 mm 宽带调谐。

Abstract

An acousto-optic Q-switched Nd:YVO4 laser end-pumped by laser diode (LD) is used as the pump source, and a MgO-doped PPLN (PPMgLN) is chosen as nonlinear crystal. By optimizing the pump beam quality and mode matching, a mid-infrared pulsed optical parametric oscillator (OPO) is realized. In the experiment, if laser diode (LD) pump power is determined, mid-infrared laser output power is changed by the repetition frequency of the acousto-optic switch. When the repetition rate is small, the output power increases as the repetition rate increases. But when the repetition rate reaches a certain value, output power decreases as the repetition frequency increases. The optical parametric oscillator could be tuned from 2.95~4.16 mm by changing the period of PPMgLN.

参考文献

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林洪沂, 黄晓桦, 许英朝, 朱文章. PPMgLN中红外宽调谐脉冲光参变振荡器[J]. 激光与光电子学进展, 2015, 52(2): 021402. Lin Hongyi, Huang Xiaohua, Xu Yingchao, Zhu Wenzhang. Mid-infrared Tunable Pulsed Optical Parametric Oscillator Based on PPMgLN[J]. Laser & Optoelectronics Progress, 2015, 52(2): 021402.

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