极低时间抖动的飞秒激光技术(特邀) |
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引用本文: | 皮一涵,王春泽,宋有建,胡明列. 极低时间抖动的飞秒激光技术(特邀)[J]. 红外与激光工程, 2020, 49(12): 20201058-1-20201058-13. DOI: 10.3788/IRLA20201058 |
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作者姓名: | 皮一涵 王春泽 宋有建 胡明列 |
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作者单位: | 天津大学 精密仪器与光电子工程学院 光电信息技术教育部重点实验室,天津 300072 |
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基金项目: | 区域光纤通信网与新型光通信系统国家重点实验室开放基金;国家自然科学基金;天津市自然科学基金 |
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摘 要: | 飞秒激光器的时间抖动(或定时抖动)是指其输出脉冲的时域位置相对于理想周期信号的短期随机偏差。在毫秒量级的时间尺度上,飞秒激光器的脉冲序列具有严格的一致性,其定时抖动甚至低至阿秒量级。飞秒激光器的这种独特性质及其支持的前沿应用构成了“阿秒时间精度的超快光子学”这一全新的超快研究分支。文中回顾了近年来飞秒激光器定时抖动研究进展、高时间分辨率的定时抖动测量技术、以及不同类型的飞秒激光源能够达到的最低抖动水平。最后介绍了低抖动飞秒激光器在大科学装置同步、高速模数转换、绝对测距、相干脉冲合成等领域的应用。
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关 键 词: | 激光光学 飞秒激光 定时抖动 锁模激光器 |
收稿时间: | 2020-09-18 |
Ultra-low timing jitter femtosecond laser technology (Invited) |
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Affiliation: | Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China |
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Abstract: | The time jitter of a femtosecond laser is the short-term deviation of the optical pulse position relative to its ideal equally spaced pulse position. Femtosecond lasers emit uniformly spaced ultrashort pulse train. The quantum-noise-limited timing jitter can be as low as few tens of attoseconds in millisecond time scale. This unique property and its advanced applications constitute a new branch of ultrafast research, Attosecond precision ultrafast photonics. In this paper, the recent advances in femtosecond laser timing jitter research, high-precision timing jitter characterization methods, and the ultralow timing jitter that can be achieved by different kinds of femtosecond laser sources were reviewed. Finally, the application of low-jitter femtosecond lasers in the fields of synchronization of large-scale scientific instruments, high-speed analog-to-digital conversion, absolute ranging technology and coherent beam combination are introduced. |
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