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中红外PPMgLN光参变振荡器技术研究

Study on mid-infrared laser PPMgLN optical parametric oscillators

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摘要

为了实现3.8μm激光输出, 采用了1.064μm激光抽运周期性极化掺氧化镁铌酸锂晶体(MgO掺杂摩尔分数为0.05)的光参变振荡器技术,由理论分析得到1.064μm激光抽运PPMgLN实现激光输出时, 输出波长与极化周期以及温度的关系曲线。实验中, 当晶体周期为29.2μm、温度为400K时, 实现了3.8μm激光输出; 当抽运功率为35W、声光调Q频率为8kHz条件下, 获得3.84μm激光输出的平均功率为3.9W, 其转换效率为11.14%, 激光光束质量为6.46。结果表明, 该技术可以获得较高转换效率的3.8μm激光输出, 有望成为中红外激光对抗的激光干扰源。

Abstract

In order to obtain 3.8μm laser output, it was demonstrated in optical parametric oscillator(OPO)with periodically poled lithium niobate crystals doped with magnesium oxide (mole fraction of MgO-doping is 0.05) pumped by 1.064μm laser. The relationship curve between output wavelength and polarization period and the temperature was calculated. When polarization period is 29.2μm and the temperature is 400K, 3.8μm laser output is achieved. When pump power is 35W at repetition rate of 8kHz, an average output power of 3.9W at 3.84μm is obtained with slope efficiency of 11.14%, and the M2 factor is 6.46. The results show that 3.8μm laser output can be obtained with high conversion efficiency, and it can be used as laser sources of infrared laser interference.

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中图分类号:TN248.1

DOI:10.7510/jgjs.issn.1001-3806.2014.03.018

所属栏目:激光物理与激光器件

收稿日期:2013-05-30

修改稿日期:2013-06-27

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谢宇宙:西南技术物理研究所, 成都 610041
万勇:西南技术物理研究所, 成都 610041
邓华荣:西南技术物理研究所, 成都 610041
李燕凌:西南技术物理研究所, 成都 610041
薛亮平:西南技术物理研究所, 成都 610041
张伟:西南技术物理研究所, 成都 610041

联系人作者:谢宇宙(wy209@sohu.com)

备注:谢宇宙(1988-), 男, 硕士研究生, 主要从事激光二极管抽运固体激光器技术的研究工作。

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引用该论文

XIE Yuzhou,WAN Yong,DENG Huarong,LI Yanling,XUE Liangping,ZHANG Wei. Study on mid-infrared laser PPMgLN optical parametric oscillators[J]. Laser Technology, 2014, 38(3): 368-371

谢宇宙,万勇,邓华荣,李燕凌,薛亮平,张伟. 中红外PPMgLN光参变振荡器技术研究[J]. 激光技术, 2014, 38(3): 368-371

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