光学学报, 1996, 16 (6): 721, 网络出版: 2006-12-04
多模气体激光纵模线型函数及其频宽的实验观测
Observation of Line-Shape Function and Its Frequency Width of Longitudinal Mode in a Multi-Mode Gas Laser
纵模线型函数 纵模频宽 多模激光 时间相干性 程差2kL法 spectral line-shape function of longitudinal mode frequecy width of longitudinal mode a multi-mode laser temporal coherence 2kL method of the optical-path difference
摘要
本文根据多模激光时间相干性g(1)(τ)的准周期性特点,提出了一种观测多模激光纵横线型函数及其频宽的新方法──程差2kL法。文章介绍了测量原理与方法,并以双模He-Ne激光器为例,给出了相应的实验结果。研究表明,多模气体激光的纵横线型函数为洛仑兹外。(Lorentz)线型函数,相应的纵模频宽约为10 7Hz。
Abstract
According to the periodical property of temporal coherence g(1)(τ) in a multimode gas laser, a new method of observing the spectral line-shape function and its frequency width of longitudinal mode in a multi-mode laser is proposed in this paper. The investigation shows that the spectral line-shape function of longitudinal mode in the multimode gas lasers is Lorentz line- shape function, and relative frequency width of longitudinal mode is about 107 Hz.
印建平, 方建兴, 高伟建, 王育竹. 多模气体激光纵模线型函数及其频宽的实验观测[J]. 光学学报, 1996, 16(6): 721. 印建平, 方建兴, 高伟建, 王育竹. Observation of Line-Shape Function and Its Frequency Width of Longitudinal Mode in a Multi-Mode Gas Laser[J]. Acta Optica Sinica, 1996, 16(6): 721.
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