Noise characteristics of laser diode pumped solid-state laser by intracavity sum-frequency of KTP phase matching II

TAN Hui-ming; GAO Lan-lan; L? Yan-fei

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Noise characteristics of laser diode pumped solid-state laser by intracavity sum-frequency of KTP phase matching II

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- Noise characteristics of laser diode pumped solid-state laser by intracavity sum-frequency of KTP phase matching II
- Optics and Precision Engineering Vol. 12, Issue 5, Pages: 459-464(2004)
- 作者机构：
  
  中国科学院, 长春光学精密机械与物理研究所, 吉林, 长春, 130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN248.4
- Received：22 June 2004，
  
  Revised：18 August 2004，
  
  Published Online：15 October 2004，
  
  Published：15 October 2004
- 稿件说明：
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檀慧明, 高兰兰, 吕彦飞. 激光二级管泵浦KTP腔内和频激光器及噪声特性的分析[J]. 光学精密工程, 2004,(5): 459-464

TAN Hui-ming, GAO Lan-lan, L? Yan-fei. Noise characteristics of laser diode pumped solid-state laser by intracavity sum-frequency of KTP phase matching II[J]. Editorial Office of Optics and Precision Engineering, 2004,(5): 459-464
檀慧明, 高兰兰, 吕彦飞. 激光二级管泵浦KTP腔内和频激光器及噪声特性的分析[J]. 光学精密工程, 2004,(5): 459-464 DOI：

TAN Hui-ming, GAO Lan-lan, L? Yan-fei. Noise characteristics of laser diode pumped solid-state laser by intracavity sum-frequency of KTP phase matching II[J]. Editorial Office of Optics and Precision Engineering, 2004,(5): 459-464 DOI：

摘要

给出了采用了激光二极管泵浦Nd:YVO

晶体产生1064nm与1342nm双谱线振荡的实验研究

通过KTP晶体II类相位匹配腔内和频产生输出波长为593.5nm的橙黄色激光的实验.在不同泵浦功率下

测量和分析了该激光器的噪声特性.根据和频激光器输出的纵模结构测量结果与和频光耦合波方程

研究了和频激光器的噪声与参与和频的基频光纵模之间的关系.结果表明:对于激光二极管泵浦Nd:YVO

激光晶体

KTPII类位相匹配腔内和频激光器

如参与和频的2个波长中有一个波长为单纵模工作

尽管和频光输出为多个纵模

该激光器的输出仍为低噪声状态.如参与和频的2个波长全为多纵模

和频光输出为高噪声状态.在腔内和频过程中

虽然没有倍频过程中的和频引起模式竞争

但参与和频2个基频光的不同模式间的交叉和频和同一波长的不同模式间的增益饱和

也产生了与绿光问题类似的输出噪声和不稳定状态

但噪声特性要好于同类的腔内倍频激光器.

Abstract

The laser diode pumped Nd:YVO

crystal and intracavity sum-frequency by KTP nonlinear crystal phase matching II to generate the orange-yellow laser of 593.5 nm from the wavelengths of 1064 nm and 1342 nm is presented. The noise characteristics of laser has been measured and analyzed in different pumping power. According to the longitudinal mode structure of sum-frequency output

which is measured by F-P scanning interferometer and coupled-wave equationship of sum-frequency generation

the relations between the noise of intracavity sum-frequency laser and the longitudinal mode structure of fundamental frequency has been researched. The results show that the output is low noise operating if the one of wavelengths in intracavity sum-frequency generation is single longitudinal mode in the sum-frequency laser with Nd:YVO

as gain materials and KTP phase matching II as sum frequency crystals. The cross sum-frequency generation between different modes of different wavelengths and gain saturation between different mode of the same wavelength cause noise and instability

which is the same as "green problems"

but noise amplitude is lower than intracavity-doubled laser with the same crystals.

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references

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