【作者】 卢兆林；

【导师】 韩香娥；

【作者基本信息】 西安电子科技大学 ， 光学， 2006， 硕士

【摘要】 随着激光技术的发展,光电对抗成为现代战争中的重要一环,各国对激光威胁的侦察、探测和告警工作都极为重视。针对短脉冲激光信号的探测一直是人们关注的课题,本文所介绍的激光告警装置能够实现对宽光谱、大视场脉冲激光波长及方位的探测。本文的工作重点是对500-1600nm波长范围内脉冲激光信号进行准确、快速、实时的检测与识别。主要内容包括三个方面：1.设计了一套基于鱼眼透镜的光学接收系统,从而保证了本激光告警系统具有很大的视场范围。2.由于探测范围分为500-900nm、900-1600nm两段,所以采用了两套光谱分光系统。以全息凹面光栅为色散系统简化了光学分光系统的组成,使激光告警装置小型化得到了实现。通过光学分光系统与光学接收系统的有效耦合,极大降低了光能的损耗,提高了装置的灵敏度。3.基于凹面光栅方程式推导了来袭激光波长及方位定标的表达式。通过大量测量,以及曲线拟合的方法,很好地校正了系统的误差,提高了波长定标公式的精确度,使本告警装置具有很大的可靠性。最终将整套光学系统进行了集成化,使本告警装置实现了小型化、集成化的目标。更多还原

【Abstract】 With the development of laser technology, the electro-optical countermeasure becomes an important factor for modern wars, and all countries attach most importance to the detection of the threat of laser. The detection to the signal of short pulse laser attaches much interest all over the world. The laser warning device presented here could be employed to the detection of the wavelength and orientation of pulse laser with wide spectrum and angle of view.This thesis is devoted to the exact, fast and real-time detection and recognition to the signal of pulse laser with wavelength of 500～1600 nm.The following contexts are mainly included:1.A set of optical receiving system with fisheye lens is designed to guarantee the wide angle of view.2. Two sets of spectrometers are employed according to the divided wavelengths of 500-900nm and 900-1600nm.Holographic concave grating is adopted as dispersive system to simplify the spectrometer system so as to minimize the laser warning device. Spectrometer system and optical receiving system are effectively coupled to reduce the loss of light energy and to enhance the sensitivity of the whole device.3. The formulas about wavelength and orientation are derived on the basis of concave grating equation. Much measurements and curve-fitting are employed to reduce error and to improve the accuracy of formulas resulting in the much dependence of the device.Finally the optical system is integrated to the miniaturization and integration of the whole laser warning device.更多还原