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| 基于电调制的宽带太赫兹光梳光谱研究 |
| Broadband terahertz optical frequency comb based on electrical modulation |
| 投稿时间：2025-03-07 |
| DOI：10.3969/j.issn.1005-5630.202503070044 |
| 中文关键词: 电调制 光学频率梳 太赫兹 梳齿分辨 |
| 英文关键词:electrical modulation optical frequency comb terahertz comb resolution |
| 基金项目:国家自然科学基金（62375173，61927813） |
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| 中文摘要: |
| 提出并实现了一种基于电调制光学频率梳的宽带高精度太赫兹光梳光谱产生及探测方法。该方法采用电光调制技术将超稳连续激光转换为频率梳，通过孤子自频移和滤波效应实现低噪声和高频率稳定性的电调制光学频率梳，结合功率放大与脉冲压缩，输出脉冲宽度百飞秒的电光梳，实现超高频率稳定性的太赫兹脉冲发射。进一步搭建双电调制光梳太赫兹异步取样探测系统，实现梳齿间隔50 MHz，梳齿线宽5.51 MHz的高分辨太赫兹光梳光谱探测。 |
| 英文摘要: |
| This study proposes and demonstrates a broadband, high-precision terahertz optical comb spectrum generation and detection method utilizing an electrically modulated frequency comb. In this method, the ultra-stable CW laser is converted into a frequency comb by electro-optical modulation technology. Through the soliton self-frequency shift and filtering effect, an electro-modulated optical frequency comb with low noise and high frequency stability is achieved. Subsequent integration of power amplification and pulse compression techniques generates femtosecond pulse-width electro-optical comb output, enabling ultra-high frequency stability in terahertz pulse emission. Additionally, the implementation of terahertz asynchronous sampling using electro-optical dual combs facilitates high-resolution terahertz optical comb spectral detection, achieving a comb tooth interval of 50 MHz and a comb linewidth of 5.51 MHz. |
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