Thermal effect of end-pumped Nd：YVO4/Nd：GdVO4/Nd：GdYVO4 crystals

ZHANG Yu; HUANG Chun-xia; WANG Ming-jian; DAI Wei; LI De-chuan; HUA Wen-qiang; LI Jian

doi:10.3969/j.issn.1001-3806.2010.03.011

To improve the thermal effect of laser crystal,the rectangle thermal conduct model of laser crystal was established.The temperature distribution and end-thermal deformation of rectangle Nd:YVO4N/Nd:GdVO4/Nd:GdYVO4 laser crystals were obtained after solving Possion equation,and the optical path difference(OPD)induced by end-thermal deformation and the total OPD were calculated.After comparison,it was shown that in the same eondation,the highest central temperatures of the pumped face of Nd:YVO4,Nd:GdYVO4 and Nd:GdVO4 crystals were 320℃,342℃ and 190℃,the biggest total OPD were 1.7μm,2.11μm and 1.3μm respectively.The results show that the central temperature rise and the total OPD of Nd:GdYVO4 crystal are the smallest and it is fitter for the pumped face of LD with high power.The study shows that the OPD induced by end-thermal deformation have a large influence on thermal focal length of laser crystals for solid-state lasers with high power.

Thermal effect of end-pumped Nd：YVO4/Nd：GdVO4/Nd：GdYVO4 crystals

Corresponding author: LI Jian, lijian@sdnu.Edu.cn

1. College of Physics and Electronics, Shandong Normal University, Ji'nan 250014, China

Received Date: 2009-03-23

Accepted Date: 2009-05-07

Available Online: 2010-05-25

Abstract: To improve the thermal effect of laser crystal,the rectangle thermal conduct model of laser crystal was established.The temperature distribution and end-thermal deformation of rectangle Nd:YVO4N/Nd:GdVO4/Nd:GdYVO4 laser crystals were obtained after solving Possion equation,and the optical path difference(OPD)induced by end-thermal deformation and the total OPD were calculated.After comparison,it was shown that in the same eondation,the highest central temperatures of the pumped face of Nd:YVO4,Nd:GdYVO4 and Nd:GdVO4 crystals were 320℃,342℃ and 190℃,the biggest total OPD were 1.7μm,2.11μm and 1.3μm respectively.The results show that the central temperature rise and the total OPD of Nd:GdYVO4 crystal are the smallest and it is fitter for the pumped face of LD with high power.The study shows that the OPD induced by end-thermal deformation have a large influence on thermal focal length of laser crystals for solid-state lasers with high power.

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Reference (13)

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Thermal effect of end-pumped Nd：YVO4/Nd：GdVO4/Nd：GdYVO4 crystals

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