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

fYear

2012

fDate

29-31 May 2012

Firstpage

2624

Lastpage

2626

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on

Conference_Location

Sichuan

Print_ISBN

978-1-4673-0025-4

Type

conf

DOI

10.1109/FSKD.2012.6234091

Filename

6234091