| 基于电光采样的飞秒激光精密测距及应用 |
| Precision Femtosecond Laser Ranging Based on Electro-Optic Sampling and the Applications |
| 投稿时间：2024-12-28 修订日期：2025-02-09 |
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| 中文摘要: |
| 本研究探索了基于电光采样定时检测技术的飞秒光频梳精密测距。该系统结合了光纤Sagnac干涉环、动态相位偏置的电光调制器、非互易静态相位偏置单元以及光脉冲飞行时间探测，具备高精度和高速度的优点。系统在26ms积分时间内可实现45nm的单点测距不确定度，并结合二维扫描平移台，实现了量块台阶高度和硬币表面形貌的精密测量，以及对3米外受附近扬声器声波振动的漫反射金属薄膜进行了动态检测，还原了所播放的音乐声信号。 |
| 英文摘要: |
| This study explores precision ranging using a femtosecond optical frequency comb based on electro-optic sampling timing detection technology. The system integrates a fiber Sagnac interferometer, dynamic phase modulation with electro-optic modulators, non-reciprocal static phase biasing units, and optical pulse time-of-flight detection, offering advantages of high precision and speed. The system achieves a 45nm single-point ranging uncertainty within a 26ms integration time. Coupled with a two-dimensional scanning translation stage, it enables precise measurements of step heights on gauge blocks and surface morphology of coins. Additionally, it dynamically detects diffuse reflections from a metallic film 3 meters away influenced by nearby speaker sound waves, faithfully reproducing the played music signals. |
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| 中文关键词: 激光测距 台阶测量 电光采样 光学频率梳 |
| 英文关键词:laser ranging step measurement electro-optic sampling optical frequency comb |
| 基金项目:国家重点研发计划项目（2022YFB4601103）；广东省量子科学战略专项资助（GDZX2302002） |
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