Chui Hsiang-Chen, Shaw Sen-Yen, Ko Ming-Sheng, Liu Yi-Wei, Shy Jow-Tsong, Lin Tyson, Cheng Wang-Yau, Roussev Rostislav V, Fejer Martin M
Department of Electrical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan.
Opt Lett. 2005 Mar 15;30(6):646-8. doi: 10.1364/ol.30.000646.
The iodine molecule has frequently been used as a frequency reference from the green to the near-infrared wavelength region (500-900 nm). We describe the frequency locking of the second-harmonic signal of a 197.2-THz (1520.25-nm) distributed-feedback diode laser to the absorption lines of the iodine hyperfine structure; a frequency jitter below 0.1 MHz was achieved at a 300-ms time constant. This scheme provides a simple, compact, and high-performance frequency reference in the optical communication band.
碘分子经常被用作从绿光到近红外波长区域（500 - 900纳米）的频率参考。我们描述了将197.2太赫兹（1520.25纳米）分布反馈二极管激光器的二次谐波信号频率锁定到碘超精细结构的吸收线上；在300毫秒的时间常数下实现了低于0.1兆赫兹的频率抖动。该方案在光通信频段提供了一种简单、紧凑且高性能的频率参考。
