Title :
Computer simulation of thermal focal length of laser crystal and thermally-near-unstable resonator
Author :
Geng Aicong ; Li Baohe ; Chen Xiaobai ; Yang Xiaodong ; Yang Mingjiang
Author_Institution :
Dept. of Phys., Beijing Technol. & Bus. Univ., Beijing, China
Abstract :
A simple method determining the thermal focal length of gain medium was investigated. Then by using computer simulation results, a novel configuration was proposed. In the new configuration, the gain medium acts as a mode limiter at maximal pump power, which restrains resonance of high-order modes and guarantees not only high output power but also high beam quality. An LD side-pumped Nd:YAG laser with output power of 400W at 1064nm was obtained experimentally with the new configuration. The experimental results are in agreement with theoretical predictions.
Keywords :
laser beams; laser cavity resonators; neodymium; optical focusing; optical pumping; solid lasers; yttrium compounds; YAG:Nd; beam quality; computer simulation; gain medium; high order modes; laser crystal; laser diode side pumping; mode limiter; power 400 W; thermal focal length; thermally-near-unstable resonator; wavelength 1064 nm; Cavity resonators; Laser beams; Laser excitation; Laser modes; Measurement by laser beam; Pump lasers; Solid lasers; computer simulation; laser; thermal focal length;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on
Conference_Location :
Sichuan
Print_ISBN :
978-1-4673-0025-4
DOI :
10.1109/FSKD.2012.6234091
