基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG 激光器的被动调Q与锁模

王加贤; 庄鑫巍

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基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG 激光器的被动调Q与锁模

现代应用光学 | 更新时间：2020-08-12

- 基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG 激光器的被动调Q与锁模
- Passive Q-switching and mode-locking in a flashlamp-pumped Nd∶YAG laser with semiconductor saturable absorption mirror
- 光学精密工程 2006年14卷第4期页码：584-588
- 作者机构：
  
  华侨大学信息科学与工程学院,福建泉州,362021
- 作者简介：
- 基金信息：
  
  国务院侨办科研基金(No.05QZR11) 福建省自然科学基本(No.A0310022)()
- DOI：
  中图分类号： TN248.1
- 收稿日期：2005-11-12，
  
  修回日期：2005-06-09，
  
  纸质出版日期：2006
- 稿件说明：
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王加贤, 庄鑫巍. 基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG 激光器的被动调Q与锁模[J]. 光学精密工程, 2006,14(4): 584-588

WANG Jia-xian, ZHUANG Xin-wei. Passive Q-switching and mode-locking in a flashlamp-pumped Nd∶YAG laser with semiconductor saturable absorption mirror[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 584-588
王加贤, 庄鑫巍. 基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG 激光器的被动调Q与锁模[J]. 光学精密工程, 2006,14(4): 584-588 DOI：

WANG Jia-xian, ZHUANG Xin-wei. Passive Q-switching and mode-locking in a flashlamp-pumped Nd∶YAG laser with semiconductor saturable absorption mirror[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 584-588 DOI：

摘要

基于同一块半导体可饱和吸收镜(SESAM)

实现了闪光灯抽运的Nd∶YAG激光器的被动调

Q与锁模。实验结果表明:腔长较小时

激光器运转在调Q状态

调Q

脉冲宽度为90 ns;随着腔长的增加

调

脉冲中出现调制

而且调制深度随着腔长的增加而加深。当腔长为140 cm

全反射凹面镜曲率半径为300 cm时

激光器运转在稳定的被动锁模状态

输出的锁模脉冲序列能量为27 mJ 、脉宽为35 ps。实验比较了SESAM器件在平凹稳定腔和平凸非稳腔激光器中实现被动锁模的差异

并给出理论解释。SESAM有望取代有机染料成为闪光灯抽运的Nd∶YAG激光器理想的被动锁模器件。

Abstract

The passive

-switched and mode-locked operations were realized in a flashlamp pumped Nd:YAG laser with the same Semiconductor Saturable Absorption Mirror(SESAM) under the different conditions. The experimental results show that for the shorter cavity length (

90 cm)

the laser only operates in the

-switched mode and the pulse duration of the

-switched pulse is 90 ns

and the amplitude modulation occurrs in the

-switch pulse and the modulation gradually deepens with the increase of cavity length. When the cavity length is 140 cm and the radius of curvature of the full-reflective concave mirror is 300 cm

the Nd∶YAG laser is operated in the stable mode-locking and a pulse train with 27 mJ energy and 35 ps pulse duration is obtained. The differences of the passive mode-locking by the SESAM in the plane-concave stable resonator and the plane-convex unstable resonator lasers were experimentally compared and reasonably explained. It is concluded that the SESAM can replace organic dyes to become the best saturable absorber for the mode-locked operation of the flashlamp pumped Nd:YAG laser with larger output energy.

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references

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