Thermal effect of Nd：GdVO4 crystal end-pumped by fiber coupled diode laser

DONG Wu-wei; LI Long; SHI Peng; GAN An-sheng; XU Qi-ming

doi:10.3969/j.issn.1001-3806.2009.06.021

LASER TECHNOLOGY > 2009 > 33(6): 633-637. > DOI: 10.3969/j.issn.1001-3806.2009.06.021

DONG Wu-wei, LI Long, SHI Peng, GAN An-sheng, XU Qi-ming. Thermal effect of Nd：GdVO4 crystal end-pumped by fiber coupled diode laser[J]. LASER TECHNOLOGY, 2009, 33(6): 633-637. DOI: 10.3969/j.issn.1001-3806.2009.06.021

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Thermal effect of Nd：GdVO4 crystal end-pumped by fiber coupled diode laser

1.
Faculty of Science, Xi'an University of Architecture & Technology, Xi'an 710055, China;
2.
School of Materials Science and Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China

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Received Date: September 18, 2008
Revised Date: October 07, 2008
Published Date: December 24, 2009

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Abstract

Abstract

In order to study the thermal effect of laser crystal end-pumped by diode lasers,the temperature rise and thermal distortion on pumped-face of the laser crystal were analytically studied.After analyzing the working characteristics of the laser crystal,taking into account of the aeolotropism of heat conduction of Nd:GdVO4 crystal,the general analytical expressions of the temperature field and thermal distortion field of Nd:GdVO4 crystal end-pumped by super-Gaussian beam were obtained based on the Poisson equation for aeolotropic heat conduction.The effect of different orders and spot size of super-Gaussian beam on the temperature field and the thermal distortion field of Nd:GdVO4 crystal was quantitatively analyzed.The results show that the maximal temperature rise and thermal distortion on the pumped-face of Nd:GdVO4 crystal doped with 0.012 (atomicity fraction) neodymium ion are 419.3℃ and 0.711 m respectively with the fifth-order super-Gaussian beam central-end-pumping,if the output power of diode laser is 30W,the transmission efficiency of the optical focusing coupler is 85%.The results have the theoretical instruction for estimating the thermal focus lens of Nd:GdVO4 crystal and designing the heat insensitive resonant cavity of lasers.
- laser physics,
- Nd:GdVO4 laser,
- thermal effect,
- analytical,
- aeolotropic heat conduction

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References (24)

References

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