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用声光调制器实现的1 W Nd∶YAG单纵模环形激光器

1 W Nd-YAG single-longitudinal-mode ring laser using acousto-optic modulator

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摘要

鉴于单向环形腔是目前获得较大功率单纵模激光最有效的方式之一, 为使环形腔单向运行, 需要在环形腔内插入对正反2个方向的光产生损耗差的光学元件。采用激光二极管泵浦Nd∶YAG晶体, 用声光调制器作为光学二极管使环形腔单向运行, 实现四镜矩形环形腔单纵模激光器。实验中谐振腔的稳定性由增益介质的热透镜保证, 声光调制器给正反2个方向的光提供损耗差, 这使得在竞争过程中有较大损耗的光不能运行从而获得单向输出。实验获得了连续功率1 W、光束质量因子M2为1.21 的1.06 μm单纵模激光。

Abstract

Using unidirectional ring resonator is the most promising way to get high power single-longitudinal-mode (SLM) laser output. To enforce the single-longitudinal-mode ring cavity to operate unidirectionally, a component which can introduce loss difference between the counter-propagating beams in the cavity is necessary. A diode-pumped Nd∶YAG SLM four-mirror rectangle ring laser was experimentally demonstrated. The stability of the cavity was ensured by the thermal of the gain medium, and an intra-cavity acousto-optic modulator was used as the optical diode, which provided different losses on the counter-propagating beams. The beam with larger loss died out in their competition for the gain and hence the unidirectional operation was demonstrated. An SLM output power of 1 W at 1.06 μm with a beam quality factor M2 of 1.21 was obtained. The considerable increased output power and compact architecture are especially important for future practical application.

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DOI:10.5768/jao201435.0207001

基金项目:中央高校基本科研业务费资助课题(72124698)

收稿日期:2013-08-19

修改稿日期:2013-11-19

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连天虹:西安电子科技大学 物理与光电工程学院,陕西 西安 710071
王石语:西安电子科技大学 物理与光电工程学院,陕西 西安 710071
刘国荣:总装备部西安军代局,陕西 西安 710032
王一斌:西安科技大学 理学院,陕西 西安 710054
蔡德芳:西安电子科技大学 物理与光电工程学院,陕西 西安 710071
李兵斌:西安电子科技大学 物理与光电工程学院,陕西 西安 710071
过振:西安电子科技大学 物理与光电工程学院,陕西 西安 710071

联系人作者:连天虹(tianhongl@126.com)

备注:连天虹(1984-), 男, 甘肃会宁人, 博士研究生, 主要从事固体激光器方面的研究工作。

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引用该论文

LIAN Tian-hong,WANG Shi-yu,LIU Guo-rong,WANG Yi-bin,CAI De-fang,LI Bing-bin,GUO Zhen. 1 W Nd-YAG single-longitudinal-mode ring laser using acousto-optic modulator[J]. Journal of Applied Optics, 2014, 35(2): 332-335

连天虹,王石语,刘国荣,王一斌,蔡德芳,李兵斌,过振. 用声光调制器实现的1 W Nd∶YAG单纵模环形激光器[J]. 应用光学, 2014, 35(2): 332-335

被引情况

【1】刘海强,汪正进,常坤. 一种圆棒晶体球形端面球心位置检测方法. 应用光学, 2015, 36(2): 282-286

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