CAJ | 학술논문

压缩态光场是量子遥感成像实验中使用的光源，制备该光源的过程中需要一个窄线宽的模清洁器改善激光的光束横模质量和过滤高频噪声。文章对模清洁器抑制高阶模的原理进行了研究，根据实验需求设计了三镜环形腔结构的模清洁器基本参数，设计中兼顾了窄线宽与透过效率两方面要求，线宽为1.4MHz，透过效率为60%。通过仿真优化了模清洁器对高阶模的抑制效果，最终设计的模清洁器对高阶模的抑制度大于12dB，将用于795nm量子遥感成像实验中。
압축태광장시양자요감성상실험중사용적광원，제비해광원적과정중수요일개착선관적모청길기개선격광적광속횡모질량화과려고빈조성。문장대모청길기억제고계모적원리진행료연구，근거실험수구설계료삼경배형강결구적모청길기기본삼수，설계중겸고료착선관여투과효솔량방면요구，선관위1.4MHz，투과효솔위60%。통과방진우화료모청길기대고계모적억제효과，최종설계적모청길기대고계모적억제도대우12dB，장용우795nm양자요감성상실험중。
Squeezed light is light source in the experiment of quantum remote sensing. A mode-cleaner, which can suppress frequency fluctuations of the fundamental mode and attenuate the higher order modes, is required for generating squeezed light. In this paper, an optical mode-cleaner with three mirrors ring structure is designed and its consequence on the suppression of higher order modes is characterized. And by means of simulation we optimize the parameters of the mode cleaner. The designed mode-cleaner whose bandwidth is 1.4MHz is able to reduce the suppression of the higher order modes by 12 dB. The mode-cleaner will be constructed and commissioned in the experiment of quantum remote sensing.