Study on free-temperature-controlled lasers side-pumped by laser diodes

GAO Heng; JIA Kai; YANG Chuang; LIU Yaping; ZHAO Gang; GAO Jun

doi:10.7510/jgjs.issn.1001-3806.2019.01.001

LASER TECHNOLOGY > 2019 > 43(1): 1-5. > DOI: 10.7510/jgjs.issn.1001-3806.2019.01.001

GAO Heng, JIA Kai, YANG Chuang, LIU Yaping, ZHAO Gang, GAO Jun. Study on free-temperature-controlled lasers side-pumped by laser diodes[J]. LASER TECHNOLOGY, 2019, 43(1): 1-5. DOI: 10.7510/jgjs.issn.1001-3806.2019.01.001

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Study on free-temperature-controlled lasers side-pumped by laser diodes

Southwest Institute of Technical Physics, Chengdu 610041, China

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Received Date: April 06, 2018
Revised Date: June 11, 2018
Published Date: January 24, 2019

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Abstract

In order to solve the problem that the laser output energy decreases when laser diode pump wavelength drifts with temperature, the technology of laser diode pump source wavelength matching and concave-convex stable resonator are used to realize temperature-free control. After theoretical analysis and experimental verification, the results show that, when the length of laser cavity is 210mm, electro-optic conversion efficiency is 5.7%. Output single pulse energy is more than 60mJ, and the energy stability is better than 5% in the range of 10℃~30℃. Laser output spot diameter is 4mm, pulse width is 8s, and laser far-field beam divergence angle is 1.1mrad at 10Hz. The experimental results are in agreement with the theoretical analysis. The laser diode side-pumped temperature-free laser can maintain a stable energy output in a certain temperature range. The theoretical analysis and the scheme are of great significance for the study on temperature-free-controlled lasers.
- lasers,
- pulse laser,
- electro-optic Q-switched,
- free temperature control,
- diode pumped laser,
- energy stability

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