Heat deposition in large-aperture diode-end-pumped laser amplifier

wang ming-zhe; li ming-zhong; tan ji-chun; ding lei; deng qing-hua; luo yi-ming

Volume 18 Issue 12

Dec. 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(12): 0-

liu xuan, zhou wei-min, zhao li-jie, et al. Molecular dynamics simulation of ultrashort laser induced back-surface spallation in metallic film[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

wang ming-zhe, li ming-zhong, tan ji-chun, et al. Heat deposition in large-aperture diode-end-pumped laser amplifier[J]. High Power Laser and Particle Beams, 2006, 18.

liu xuan, zhou wei-min, zhao li-jie, et al. Molecular dynamics simulation of ultrashort laser induced back-surface spallation in metallic film[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

wang ming-zhe, li ming-zhong, tan ji-chun, et al. Heat deposition in large-aperture diode-end-pumped laser amplifier[J]. High Power Laser and Particle Beams, 2006, 18.

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Heat deposition in large-aperture diode-end-pumped laser amplifier

1.
College of Optoelectronic Engineering and Science,National University of Defense Technology,Changsha 410073,China;
2.
Research Centre of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China

Publish Date: 2006-12-15

Abstract

Abstract

By analysing the performance features of laser diode array end-pumped disk laser amplifier, a finite element thermal model of laser crystal Nd:YLF was established. 3D and transient distributions of temperature and thermal stress of Nd:YLF pumped with 56 kW, 520 μs and 10 Hz LD were respactively calculated when the transverse distribution of pump energies was uniform, Gaussian and Super-Gaussian. The result shows that the thermal effect of the crystal under Super-Gaussian transverse distribution is the weakest, the maxmum temperature is 103.3 ℃, and the maxmum Mises stress is 47.6 MPa. When the effective pump energy reaches up to 10 kW/cm2, the fracture due to thermal stress will occur.
- ld pumped laser,
- thermal effect,
- amplifier,
- end-pumped,
- finite element analysis

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