Beam Profile Evolution and Beam Quality Changes Inside a Diode-End-Pumped Laser Oscillator

Beam Profile Evolution and Beam Quality Changes Inside a Diode-End-Pumped Laser Oscillator
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二极管端泵浦激光振荡器内的光束轮廓演变和光束质量变化

DOI:
10.1109/jqe.2013.2294362
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发表时间:
2014-02
影响因子:
2.5
通讯作者:
Ge, Jianhong
Ge, Jianhong
中科院分区:
工程技术3区
文献类型:
--
作者:
Qi, Yunxuan;Liu, Chong;Xiang, Zhen;Ge, Jianhong

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给出了非对称二极管端面泵浦激光振荡器中光束轮廓演化和光束质量变化的实验观测。两束腔内反向传输光束的光强分布和光束大小有很大的不同。测量还表明,当光束通过增益介质时,光束质量会发生变化。这些现象归因于热致像差和软光圈诱导的衍射。研究结果为设计具有基模输出的高功率激光振荡器提供了新的思路。
Experimental observations of beam profile evolution and beam quality changes in an asymmetrical diode-end-pumped laser oscillator are presented. The beam intensity distribution and beam size show great differences between the two intra-cavity counter-propagating beams. Measurements also show that the beam quality changes when the beam passes through the gain medium. These phenomena are attributed to the thermally induced aberrations and soft aperture induced diffractions. The results present a novel clue of designing a high power laser oscillator with fundamental mode output.
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