基于制冷法布里-珀罗腔的激光频率漂移控制

发布时间：2018-06-06 11:57

  本文选题：激光光学 + 频率稳定性　； 参考：《激光与光电子学进展》2017年03期

【摘要】：将自由运转的激光器参考锁定在隔振、恒温、高细度的Fabry-Pérot(F-P)参考腔上,获得了短期稳定性频率较好的窄线宽激光。为了降低温度对激光频率稳定性的影响,F-P腔的腔体一般选用具有超低热膨胀(ULE)系数的玻璃材料。ULE玻璃存在一个特定的温度点,该温度点下其ULE系数接近0,称之为拐点温度。由于其拐点温度通常低于或者高于室温,因此设计了一套主动温控装置,该装置可在高真空环境中将F-P腔的温度控制在-5~40℃范围内,并且一天内F-P腔的温度波动范围在±0.005℃以内。该温度控制装置可应用在工作波长为729nm的ULE F-P腔系统中,当该参考腔的温度控制在拐点温度(17.3℃)附近时,平均线性频率漂移控制在100mHz/s以内。
[Abstract]:The reference of the free-running laser is locked on the Fabry-P 茅 rott F-P reference cavity with vibration isolation, constant temperature and high fineness, and a narrow linewidth laser with good short term stability frequency is obtained. In order to reduce the influence of temperature on laser frequency stability, the cavity of F-P cavity is usually composed of glass material with ultralow thermal expansion coefficient. There exists a specific temperature point for the glass. The ULE coefficient is close to 0 at this temperature point, which is called inflection point temperature. Since the inflexion temperature is usually lower or higher than room temperature, an active temperature control device is designed, which can control the temperature of F-P cavity within -5 ~ 40 鈩，

本文编号：1986439