Dual-mode temperature compensation technique for laser stabilization to a crystalline whispering gallery mode resonator
Dual-mode temperature compensation technique for laser stabilization to a crystalline whispering gallery mode resonator
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DOI：
10.1364/oe.20.019185
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发表时间：
2012-08-13
期刊：
影响因子：
3.8
通讯作者：
Haensch, T. W.
中科院分区：
文献类型：
--
作者：
Fescenko, I.;Alnis, J.;Haensch, T. W.
研究了用氟化镁单晶制成WGM基准谐振腔的半导体激光器的稳频特性。光学各向异性晶体材料的两个正交极化TE和TM模(双模频率)之间的差频具有很强的热依赖性，因此可以在光学模式体积内灵敏地测量谐振器的温度。利用这种双模信号作为反馈，将自参考温度稳定到纳开尔文精度，在972 nm处获得了0.3 MHz/h的频率稳定度，并与独立的超稳定激光器进行了比较。(C)2012年美国光学学会
Frequency stabilization of a diode laser locked to a whispering gallery mode (WGM) reference resonator made of a MgF2 single crystal is demonstrated. The strong thermal dependence of the difference frequency between two orthogonally polarized TE an TM modes (dual-mode frequency) of the optically anisotropic crystal material allows sensitive measurement of the resonator's temperature within the optical mode volume. This dual-mode signal was used as feedback for self-referenced temperature stabilization to nanokelvin precision, resulting in frequency stability of 0.3 MHz/h at 972 nm, which was measured by comparing with an independent ultrastable laser. (C) 2012 Optical Society of America