将外腔二极管激光器在657.483纳米处频率稳定到分子碘。
Frequency stabilization of an external cavity diode laser to molecular iodine at 657.483 nm.
作者信息
Fang Hui-Mei, Wang Shing-Chung, Shy Jow-Tsong
机构信息
Department of Photonics, Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan.
出版信息
Appl Opt. 2006 May 1;45(13):3173-6. doi: 10.1364/ao.45.003173.
The saturation spectrum of the P(84) 5-5 transition of 127I2 at 657.483 nm is obtained with the third-harmonic demodulation method using an external cavity diode laser. The laser frequency is modulated by modulating the diode current instead of modulating the cavity length with a piezoelectric transducer (PZT). Current modulation allows a modulation frequency that is higher than PZT modulation. The signal-to-noise ratio of 1000 is better than previous results presented in the literature. The laser is frequency stabilized to the hyperfine component o of the P(84) 5-5 transition with a frequency stability of better than 10 kHz (2.2 x 10(-11) relative stability).
利用外腔二极管激光器通过三次谐波解调方法获得了 127I2 在 657.483 nm 处 P(84) 5 - 5 跃迁的饱和光谱。通过调制二极管电流而非用压电换能器（PZT）调制腔长来调制激光频率。电流调制允许使用高于 PZT 调制的调制频率。1000 的信噪比优于文献中先前给出的结果。激光频率被稳定到 P(84) 5 - 5 跃迁的超精细成分 o，频率稳定性优于 10 kHz（相对稳定性为 2.2×10⁻¹¹）。
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