Open AccessModeling of scaling of a diode longitudinally pumped metastable rare gas with a master oscillator power amplifier
Author(s) -
Hanyuan Chen,
Sichen Long,
Xiahui Tang,
Xiangxi Wu,
Wei Wang,
Yingxiong Qin
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.012504
Subject(s) - amplifier , optics , laser , metastability , diode , materials science , power (physics) , laser beam quality , scaling , physics , optoelectronics , laser beams , geometry , mathematics , cmos , quantum mechanics
There has been recent interest in diode pumped metastable rare gas lasers (DPRGLs) and their scaling to higher powers, due to the advantages of excellent beam quality and high quantum efficiency. In this paper, a cw diode pumped rare gas amplifier (DPRGA) with single-pass longitudinally pumped configuration is studied theoretically based on master oscillator and power amplifier (MOPA). A five-level kinetic model of DPRGAs is first established. Then, the influences of gain medium density, pump and seed laser intensities and gain length on DPRGA performance are simulated and analyzed. The results of numerical simulation agree well with those of Rawlins et al.'s experiment. With the best set of working parameters, the amplification factor reaches 22.18 dB, at pump intensity of 50 kW/cm 2 and seed laser intensity of 100 W/cm 2 . Parameter optimization is helpful for design of a relatively high-power DPRGL system.