基于精密波长计的外腔半导体激光长期稳频系统

发布时间：2018-05-26 06:16

本文选题：激光技术 + 频率稳定　；参考：《量子电子学报》2017年04期

【摘要】：为抑制连续激光器的长期频率漂移,以精密波长计为参考频率标准,由计算机控制可实现连续激光无调制稳频。此方法从计算机获取波长计数据,利用数字比例积分微分(PID)计算出输出给激光器的反馈电压值,从而修正激光器腔长、实现激光器频率的锁定。此方法可用于目前商业激光器光谱范围内的任意波长,能在激光器频率可调节范围内任意频率点进行锁定。用此方法实现了对631 nm外腔半导体激光器的锁定,获得了1 h频率不确定度为7.4 MHz、长期频率漂移率为士1.1 MHz/h的稳定锁定。
[Abstract]:In order to restrain the long-term frequency drift of CW laser, the frequency stabilization of CW laser without modulation can be realized by using precise wavelength meter as reference frequency standard. In this method, the data of the wavelength meter is obtained from the computer, and the feedback voltage output to the laser is calculated by using the digital proportional integral differential (PIDs), thus the length of the laser cavity is corrected and the frequency of the laser is locked. This method can be used for any wavelength in the spectrum range of commercial lasers, and can be locked at any frequency point in the range of laser frequency adjustable. The locking of 631nm external cavity semiconductor laser is realized by this method. The 1 h frequency uncertainty is 7.4 MHz and the long-term frequency drift rate is + 1.1 MHz/h.
【作者单位】：中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室;中国科学院武汉物理与数学研究所中国科学院原子频标重点实验室;中国科学院大学;
【基金】：青年科学基金,Y6Z2011001~~
【分类号】：TN248.4

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