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

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 th...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2014-02, Vol.50 (2), p.62-67
Main Authors: Ye, Zhibin, Zhao, Zhigang, Pan, Sunqiang, Zhang, Xiang, Wang, Chunhua, Qi, Yunxuan, Liu, Chong, Xiang, Zhen, Ge, Jianhong
Format: Article
Language:English
Subjects:
Beam filling factor
Cavity resonators
diode-end-pumped
laser beam
Laser beams
Laser excitation
Laser modes
laser oscillator
Lenses
Measurement by laser beam
Optical resonators
thermal effects
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Summary: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.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2013.2294362