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| 基于GaSe差频产生8~19 μm可调中红外辐射 | |
| 引用本文： | 李建松,姚建铨,徐小燕,钟凯,徐德刚,王鹏.基于GaSe差频产生8~19 μm可调中红外辐射[J].光子学报,2014,39(8):1491-1495. |
| 作者姓名： | 李建松 姚建铨 徐小燕 钟凯 徐德刚 王鹏 |
| 作者单位： | （ 天津大学 精密仪器与光电子工程学院 激光与光电子研究所 光电信息技术科学教育部重点实验室,天津 300072） |
| 基金项目： | 国家重点基础研究发展计划（2007CB310403）资助 |
| 摘 要： | 利用Nd∶YAG激光器抽运内腔KTP光学参量振荡器,得到了输出为2 μm附近的双波长,并在满足Ι类相位匹配条件下,在GaSe中共线差频产生8~19 μm连续宽调谐调的中红外辐射.在8.76 μm处脉冲最大能量达33.66 μJ,峰值功率7.4 kW,光子转换效率达4.43%左右.分析了影响能量转化效率的原因,提出了补偿走离的措施. |
| 关 键 词： | 中红外辐射 差频 相位匹配 |
| 收稿时间： | 2010-01-26 |
Generation of Tunable and Continuous Mid-infrared-radiation in the Range of 8~19 μm Based on DFG in GaSe |
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| LI Jian-song,YAO Jian-quan,XU Xiao-yan,ZHONG Kai,XU Deng-gang,WANG Peng.Generation of Tunable and Continuous Mid-infrared-radiation in the Range of 8~19 μm Based on DFG in GaSe[J].Acta Photonica Sinica,2014,39(8):1491-1495. | |
| Authors: | LI Jian-song YAO Jian-quan XU Xiao-yan ZHONG Kai XU Deng-gang WANG Peng |
| Institution: | (Key Laboratory of Opto-electric Information Science and Technology,Institute of Laser and Opto-electronics, Ministry of Education,Tianjin University,College of Precision Instrument and Opto-electronics Engineering, Tianjin 300072,China) |
| Abstract: | Using Nd∶YAG laser pump intra-cavity optical parametric oscillator,dual wavelength near 2 μm can be generated.Through collinear difference-frequency-generation,widely tunable and continuous Mid-infrared- radiation in the range of 8~19 μm is obtained under the condition of type I phase matching.The maximum output power of 7.4 kW (pulse energy of 33.66 μJ) is achieved at 8.76 μm,corresponding to photon conversion efficiency about 4.43%.The reasons that affecting conversion efficiency are analyzed and new measures are proposed to compensate walk off angle. |
| Keywords: | Mid-infrared-radiation Difference-frequency generation Phase matching |
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