1 中国科学院光电研究院,北京 100094
2 中国科学院大学, 北京100049
3 洛阳电光设备研究所, 洛阳 471000
便携式防空系统 (MANPADs)、各类红外制导导弹等红外热寻的**是民用、军用飞机重要的威胁。随着红外成像探测器被广泛用于热寻的制导**,传统的红外干扰机、曳光弹难以形成有效对抗, 以红外波段激光作为光源的红外定向对抗(DIRCM)系统是目前对抗热寻的**的有效手段。文中回顾了目前有代表性的红外定向对抗系统, 分析阐述用于红外定向对抗系统中的激光器关键技术, 给出红外成像探器致眩区域计算方法, 并讨论展望红外对抗激光器技术的发展趋势。
红外定向对抗 便携式防空系统 光参量振荡 光泵半导体激光器 量子级联激光器 direct IR countermeasure man-portable air defense system optical parametric oscillation optically-pumped semiconductor disk laser quantum-cascade laser 红外与激光工程
2018, 47(11): 1105009
张雪 1,2,3葛文琦 1,2,4余锦 1,2,3樊仲维 1,2,3[ ... ]林蔚然 1,2,4
1 中国科学院 光电研究院 半导体泵浦激光工程研究中心, 北京 100094
2 国家半导体泵浦激光工程技术研究中心, 北京 100094
3 中国科学院大学, 北京 100094
4 中科和光(天津)应用激光技术研究所有限公司, 天津 300304
根据脉冲单纵模激光器中的关键器件F-P标准具的选模原理，定量分析了不同参数F-P标准具的加工厚度精度、角度放置精度以及腔长变化对激光器纵模选择性能产生的影响，得到了对不同参数标准具的光学厚度偏差进行补偿所需的角度偏移量，研究了入射角度对标准具中心波长偏移的影响。这些结果对于脉冲单纵模激光器的机械结构设计、器件加工允差与装配调节精度的设计具有重要意义。在线型腔F-P标准具选模激光器中，得到了最大单脉冲能量8.41 μJ，脉冲宽度32 ns，近衍射极限的单纵模激光脉冲输出。
声光调Q 单纵模 F-P标准具 选模特性 acousto-optical Q-switched single-longitudinal-mode F-P etalon character of mode selecting 强激光与粒子束
2017, 29(4): 041004
Author Affiliations
Abstract
The Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 10094, China
A laser diode array side-pumped Nd:glass square rod amplifier of the dimensions 12 mm×12 mm is designed. The fluorescence is evenly distributed in the Nd:glass amplifier. When the pump power is 66.32 kW, the small signal gain increases by 3.23 times. Under the condition of a 1 Hz repetition frequency, 50 mJ of injected seed-light energy, and a 10 mm×10 mm aperture, the output energy of the laser beam can reach 1.62 J during the four-pass amplification. The output energy stability of the laser pulse is 2.94% (RMS), and the square pulse distortion is smaller than 2. The energy amplification of the injected laser beam from millijoules to joules is realized.
140.3480 Lasers, diode-pumped 140.5560 Pumping 140.2010 Diode laser arrays 140.0140 Lasers and laser optics Chinese Optics Letters
2016, 14(2): 021403
Author Affiliations
Abstract
1 The Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China
2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
3 Beijing GK Laser Technology Co., Ltd, Beijing 100085, China
The square soft-edge diaphragm with round angle is designed by Matlab, and is sent to a liquid crystal spatial light modulator by the computer. In order to obtain precompensation for the following laser system, local diaphragm transmission can be adjusted by feedback signals of surface-channel charge-coupled device (SCCD). This method can reduce the diffraction effect and realize no modulation, high stability, high homogeneity, and large scale laser beam. Several parameters of soft-edge diaphragms which affect the laser beam quality are studied systematically, and the optimized values are obtained. The method can avoid the serious modulation of hard edges and provide soft-edge diaphragms of different shapes in a fast and convenient way for the large scale laser beam system.
光束整形 软边光阑 液晶光调制器 050.1220 Apertures 140.3300 Laser beam shaping 230.3720 Liquid-crystal devices Chinese Optics Letters
2010, 8(2): 134
