Closed-loop locking of an optical frequency comb to a large ring laser.
Closed-loop locking of an optical frequency comb to a large ring laser.
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DOI：
10.1364/ol.38.003574
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发表时间：
2013-09
期刊：
影响因子：
3.6
通讯作者：
K. Schreiber;A. Gebauer;J. Wells
中科院分区：
文献类型：
--
作者：
K. Schreiber;A. Gebauer;J. Wells
我们报告的频率锁定的16平方米的环形激光器的一个单齿的光频率梳参考氢脉泽，获得了1 kHz的频率稳定度超过几天。在共模工作时，对向传播的激光束在相同的纵模折射率下运行，获得了3×10 ~（-9）相对于地球自转的旋转灵敏度。为了测试一个建议，以绕过随时间变化的背散射引起的读出误差在大型环形激光陀螺仪，我们已经操作相邻的纵向腔模式的激光器。由于地球的旋转，以这种方式获得的Sagnac频率受到大气压力变化的强烈影响，因为腔内的反向传播光束受到几何腔波动的不同影响。
We report on the frequency locking of a 16 m2 ring laser to a single tooth of an optical frequency comb referenced to a hydrogen maser, obtaining a frequency stability of 1 kHz over several days. In common mode operation, where the counterpropagating laser beams run on the same longitudinal mode index, a sensitivity to rotation of 3×10(-9) relative to Earth's rotation is obtained. To test a proposal to bypass time-varying backscatter-induced readout errors in large ring laser gyroscopes, we have operated the laser on adjacent longitudinal cavity modes. The Sagnac frequency due to Earth's rotation obtained in this fashion was strongly influenced by atmospheric pressure changes because the counterpropagating beams within the cavity are affected differently by geometric cavity fluctuations.