发布时间:2013/6/13 15:06:49 作者:杨威,黄伟,陈祖洋,钟瑞卿 【字体:
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杨威,黄伟,陈祖洋,钟瑞卿
(四川大学 制造科学与工程学院,四川 成都 610065)
摘要:针对在线测量需要强抗干扰能力以及高速测量的需要,利用新式He-Ne激光器采用金属管颈的特点,采用电磁感应涡流加热方法实现热稳频。该方法改变的谐振腔部分(激光管管颈)不被放电管外的玻璃管包围,所以散热条件好,其热变形不受约束,使系统具有预热时间短、响应速度快、抗干扰能力强、频率稳定性好等优点。经实验证明,此方法使激光器输出激光频率稳定度在恒温条件为时可达10-9,在有强冷、热气流吹拂时,也能保证不低于10-7的频率稳定度。同时双频激光频差大于500 MHz,使测量速度进一步提高。
关键词:激光稳频;电磁感应;涡流稳频;稳频精度;抗干扰
中图分类号:O441.3 文献标识码:A 文章编号:1006-0316 (2013) 06-0053-04
The system design of using electro-magnetic induction heating toperform the laser frequency stabilized
YANG Wei,HUANG Wei,CHEN Zu-yang,ZHONG Rui-qing
( School of Manufacturing Engineering, Sichuan University, Chengdu 610065, China )
Abstract:In order to meet the requirements of online measurement in high anti-interference ability and the needs of the high-speed measurements, this article provides a new system which used induction heating to perform frequency-stabilized of double longitude modes laser. The neck of laser tube based on this method is exposed in air with very good thermal dispersion conditions, so the system has a short warm-up time, rapid response speed, strong anti-interference ability and good frequency stability. Experiments have demonstrated that, under the condition of constant temperature, the frequency error of double-frequency laser interferometer with two longitudinal modes could be controlled within 10-9. Even with conditions such as with cool or hot air blowing, it can still be kept within 10-7. While its modal difference (i.e. carrier frequency) is large than 500 MHz, the measurement speed is further improved.
Key words:laser frequency stabilization; electro-magnetic induction;eddy;accuracy;anti-interference
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收稿日期:2012-12-03
作者简介:杨威(1986-),男,河南开封人,硕士研究生,主要研究方向为仪器仪表工程。