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A multipass Ti:sapphire laser amplifier pumped with homogenized Nd:YAG lasers

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Abstract

A speckle pattern is observed when a neodymium-doped yttrium aluminum garnet (Nd:YAG) laser is homogenized by a diffractive optical element (DOE) due to its high spatial coherence. Therefore, a Nd:YAG laser homogenized by a DOE was previously considered not suitable to pump a Ti:sapphire laser amplifier. However, we show by experiment and simulation that the speckle structure does not manifest itself in the final amplified Ti:sapphire laser beam. By using the homogenizer, a smooth distribution of the amplified laser beam is obtained. No degradation of the energy, the wavefront, and the temporal characteristics of the amplified laser beam is observed.

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DOI:10.3788/col201412.s21412

所属栏目:Lasers and laser optics

收稿日期:2014-03-26

录用日期:2014-05-04

网络出版日期:2014-10-20

作者单位    点击查看

Yi Zheng:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Jinglong Ma:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Xulei Ge:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
Yutong Li:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Zhiyi Wei:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Jie Zhang:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory for Laser Plasmas (MoE), Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China

联系人作者:联系作者(majinglong@iphy.ac.cn)

备注:This work was supported by the National Basic Research Program of China (No. 2013CBA01501) and the National Natural Science Foundation of China (Nos. 11135012 and 11375262).

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引用该论文

Yi Zheng, Jinglong Ma, Xulei Ge, Yutong Li, Zhiyi Wei, Jie Zhang, "A multipass Ti:sapphire laser amplifier pumped with homogenized Nd:YAG lasers," Chinese Optics Letters 12(s2), S21412 (2014)

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