激光技术, 2019, 43 (6): 821, 网络出版: 2019-12-08  

8μm~14μm长波红外相干辐射技术

8μm~14μm long-wave infrared coherent radiation technology
王旭明 1,2,3杨峰 1,2董程 1,2,3薄勇 1,2彭钦军 1,2
作者单位
1 中国科学院 理化技术研究所, 北京 100190
2 中国科学院 固体激光重点实验室, 北京 100190
3 中国科学院大学, 北京 100190
摘要
8μm~14μm长波红外相干辐射在大气激光遥感与通信、高分辨分子指纹光谱及****等诸多领域具有重要应用价值。概述了几种可获得8μm~14μm相干辐射的光源, 主要有CO2气体激光器、半导体量子级联激光器、红外自由电子激光器、红外超连续谱光源和非线性变频中红外固体激光器等。分别介绍了不同技术的基本原理及国内外进展, 并分析比较了各自的优缺点、发展方向及应用适用范围。其中, 非线性变频中红外固体激光器具有8μm~14μm连续调谐, 可飞秒、皮秒、纳秒及连续波运转, 重频1Hz~GHz可调的突出优势, 且全固化结构、可靠性高、光束质量好, 将成为发展实用化与精密化长波红外相干辐射光源的最佳选择。
Abstract
8μm~14μm long-wave infrared coherent radiation has important application value in many fields such as atmospheric laser remote sensing and communication, high-resolution molecular fingerprint spectrum and national security. Several kinds of optical sources which can obtain 8μm~14μm coherent radiation are summarized, including CO2 gas laser, semiconductor quantum cascade laser, infrared free electron laser, infrared supercontinuum spectrum source and non-linear variable frequency mid-infrared solid-state laser. The basic principles of different technologies and their progress at home and abroad are introduced. The advantages and disadvantages, development direction and application scope of each method are analyzed and compared. Nonlinear variable frequency mid-infrared solid-state lasers have outstanding advantages of 8μm~14μm continuous tuning, femtosecond, picosecond, nanosecond and continuous wave operation, and 1Hz~GHz tunable repetition frequency. Full solid structure, high reliability and good beam quality are also obtained. It will be the best choice for developing practical and precise long-wave infrared coherent radiation sources.

王旭明, 杨峰, 董程, 薄勇, 彭钦军. 8μm~14μm长波红外相干辐射技术[J]. 激光技术, 2019, 43(6): 821. WANG Xuming, YANG Feng, DONG Cheng, BO Yong, PENG Qinjun. 8μm~14μm long-wave infrared coherent radiation technology[J]. Laser Technology, 2019, 43(6): 821.

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