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介绍了利用兰姆凹陷稳频He-Ne激光器的基本结构与腔长调节工作方式,从激光器结构方面对影响其预热时间、频率稳定度和频率重复性的主要因素进行了深入探讨。介绍改进设计的新型微晶玻璃腔体一体化兰姆凹陷稳频He-Ne激光器的基本结构、制作工艺与优势。该激光器腔体采用极低膨胀系数的微晶玻璃材料,反射镜采用石英镜片光胶连接,无应力超高真空铟封形式,谐振腔稳定性好。利用该激光器进行了实验,实验结果表明,该激光器工作中不需要预热,环境适应能力极强,在高低温与冲击振动条件下均能稳定工作,频率稳定度可以达到10-10量级。
This paper introduces the basic structure and cavity length adjustment mode of Lamb-Stabilized He-Ne laser and discusses the main factors affecting the preheating time, frequency stability and frequency repeatability of laser structure. This paper introduces the basic structure, manufacturing process and advantages of Lamb-sag stabilized He-Ne laser with improved design of new glass-ceramic integrated cavity. The laser cavity is made of glass-ceramic material with very low expansion coefficient. The mirror is made of quartz glass with optical glue connection. The stress-free ultra-high vacuum Indium seal is used, and the cavity stability is good. Experiments using the laser show that the laser does not require preheating during operation and has a strong environmental adaptability. It can work stably under high and low temperature and shock and vibration conditions, and the frequency stability can reach 10-10 orders of magnitude.