自由运转双光梳高精度测距技术  

Free-Running Dual-Comb High-Precision Ranging Technology

作　　者：陈清翔 宁焱 邓博文 杨馥[1] CHEN Qing-xiang;NING Yan;DENG Bo-wen;YANG Fu(College of Physics,Donghua University,Shanghai 201600,China)

机构地区：[1]东华大学物理学院,上海201600

出　　处：《红外》2025年第3期42-46,共5页Infrared

基　　金：国家自然科学基金项目(62375048);上海市自然科学基金项目(22ZR1402600)。

摘　　要：双光梳测距系统因测量速度快、测距精度高等特性在远距离高精度测量领域显现了巨大潜力。通常情况下,需用复杂的硬件锁定双光梳系统以保证系统的稳定性。这给双光梳系统的实际应用带来负面影响。因此,将自由运转双光梳系统作为光源,利用软件校正算法(主要是互模糊函数)来提取目标的距离,大大简化了实验系统的复杂度。实验结果表明,当目标距离约为1 m、激光重复频率约为100 MHz、双梳重频差约为774 Hz时,自由运转下双光梳系统的单次测距精度约为3.56μm,且测量结果具有较好的线性度。本研究为双光梳系统的实际外场应用积累了一定的基础。The dual-comb ranging system has shown great potential in the field of long-distance and high-precision measurement due to its fast measurement speed and high ranging accuracy.Usually,the complex hardware is required to lock the dual-comb system to ensure the stability of the system.This has a negative impact on the practical application of the dual-comb system.Therefore,the free-running dual-comb system is used as the light source,and the software correction algorithms(mainly the cross-ambiguity function)are used to extract the distance of the target,which greatly simplifies the complexity of the experimental system.The experimental results show that when the target distance is about 1 m,the laser repetition frequency is about 100 MHz,and the repetition frequency difference between the combs is about 774 Hz,the single-shot ranging accuracy of the free-running dual-comb system is about 3.56 m,and the measurement results have good linearity.This study has accumulated a certain foundation for the practical field application of the dual-comb system.

关 键 词：双光梳测距 自由运转 互模糊函数 测距精度 

分 类 号：TN24[电子电信—物理电子学]