Optical frequency stabilisation and line width reduction of a multielectrode DFB laser with current feedback
Optical frequency stabilisation and line width reduction of a multielectrode DFB laser with current feedback
复制标题
具有电流反馈的多电极 DFB 激光器的光学频率稳定和线宽减小
DOI：
10.1049/el:19870809
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
K. Oe
中科院分区：
文献类型：
--
作者：
H. Yasaka;Y. Yoshikuni;Y. Nakano;K. Oe
利用多电极分布反馈激光器研究了电流反馈技术的稳频和线宽减小。在电流反馈技术中，反馈回路中的相位旋转，特别是由激光引起的相位旋转，是基本问题。这个问题通过使用无相位反转的多电极DFB激光器得到解决。我们同时成功地在光稳频和线宽减少只有一个反馈电路。光频漂移和光谱线宽分别减小到自由运行状态的1/14和1/126。获得的最小光谱线宽为95 kHz。
Optical frequency stabilisation and linewidth reduction by the current feedback technique were studied with a multi-electrode DFB laser. In the current feedback technique, phase rotation in the feedback loop, particularly induced by a laser, is the fundamental problem. This problem was resolved by using multielectrode DFB lasers without phase inversion. We simultaneously succeeded in optical frequency stabilisation and linewidth reduction with only one feedback electrical circuit. Optical frequency drift and spectral line-width were reduced to 1/14 and 1/126, respectively, of those in the free-running state. The minimum spectral linewidth obtained was 95 kHz.