CAJ | 학술논문

高重频3~5μm中波红外固体激光器由于其多方面的潜在应用而受到了广泛的重视，但由于其本身固体激光的特性，在传输过程中难免受到本身腔体温度梯度及外界环境振动的影响，而产生指向上较大的抖动和漂移，难以用于对指向精度要求较高的场合，需要在激光器出口处加入监视对准系统来抑制激光指向的抖动和漂移。因此，拟采用两种不同的探测器(四象限探测器和热释电探测器)作为此种激光器的监视对准元器件，对其在监视对准系统中的性能进行了对比试验分析。结果表明：两种监视系统得到的激光指向抖动的P-V值都在9″左右，热释电探测器的指向监视误差为5.39″。四象限探测器相比于热释电探测器具有更高的响应带宽，而热释电探测器由于基于图像的方法更加直观，因此，对于中波红外激光器而言，可以根据实际使用需要来选择相应的探测器以搭建指向监视系统。
고중빈3~5μm중파홍외고체격광기유우기다방면적잠재응용이수도료엄범적중시，단유우기본신고체격광적특성，재전수과정중난면수도본신강체온도제도급외계배경진동적영향，이산생지향상교대적두동화표이，난이용우대지향정도요구교고적장합，수요재격광기출구처가입감시대준계통래억제격광지향적두동화표이。인차，의채용량충불동적탐측기(사상한탐측기화열석전탐측기)작위차충격광기적감시대준원기건，대기재감시대준계통중적성능진행료대비시험분석。결과표명：량충감시계통득도적격광지향두동적P-V치도재9″좌우，열석전탐측기적지향감시오차위5.39″。사상한탐측기상비우열석전탐측기구유경고적향응대관，이열석전탐측기유우기우도상적방법경가직관，인차，대우중파홍외격광기이언，가이근거실제사용수요래선택상응적탐측기이탑건지향감시계통。
The high-repetition 3-5 μm mid-infrared solid-state laser has gain a lot of attention for its potential applications in civil and military. Because of the characteristic of solid-state laser, the temperature gradient of resonator and the environmental vibration in the transmission will influence the pointing of laser to generate quite large jitter and drift, which cannot be applied in some fields that the requirement of pointing precision is quite high. In such case, the monitoring and alignment system after laser are installed to control jitter and drift of laser beam. Therefore, there are two kinds of detector will conduct the comparable experiments to verify the performance. One is the infrared quadrant detector and the other is pyroelectric array camera. The experimental results show that the pointing errors for these two detectors are about 9″. The pointing error of pyroelectric detector is 5.39″. The quadrant detector has wider bandwidth than the pyroelectric array camera and the pyroelectric array camera based on the thermal image is more intuitive. Therefore, for the mid-infrared laser, corresponding detector can be chosed to built up the monitor system based on the applications requirement.