Influences of temperature rise of high-power laser cavity-mirrors on resonator parameters and far-field intensity

peng yu-feng; liang zhen-zhen; zhang yi; cheng zu-hai; zuo du-luo; yu wen-feng

Volume 19 Issue 09

Sep. 2007

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li hong-mei, qiu jing-hui, jia shi-lou. Choice of parameters for explosive magnetic generator of frequency based on magnetic flux compression technology[J]. High Power Laser and Particle Beams, 2006, 18.

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peng yu-feng, liang zhen-zhen, zhang yi, et al. Influences of temperature rise of high-power laser cavity-mirrors on resonator parameters and far-field intensity[J]. High Power Laser and Particle Beams, 2007, 19.

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Influences of temperature rise of high-power laser cavity-mirrors on resonator parameters and far-field intensity

1.
College of Physics and Information Engineering,He’nan Normal University,Xinxiang 453007,China;
2.
Institute of Optoelectronics Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

Publish Date: 2007-09-15

Abstract

Abstract

The influences of the thermal deformation of resonator mirrors induced by absorption of laser energy on geometric structure parameters of unstable resonators and intensity distributions of the far field were theoretically analyzed using finite difference methods. The far-field intensity distribution of virtual confocal unstable resonator under different thermal distortions was simulated. The results show that the resonator parameters changed significantly due to thermal deformation of the mirrors, and the central intensities of the far fields reduced obviously with thermal deformation increase.
- high-power laser,
- unstable confocal resonator,
- finite difference method,
- far-field intensity

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