Open AccessExperimental research of a chain of diode pumped rubidium amplifiers
Author(s) -
Yunfei Li,
Hua Wang,
Lei Li,
Hongyan Wang,
Zining Yang,
Xiaojun Xu
Publication year - 2015
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.23.025906
Subject(s) - amplifier , rubidium , materials science , optics , laser , amplified spontaneous emission , laser power scaling , power (physics) , optical pumping , optoelectronics , optical amplifier , physics , potassium , cmos , quantum mechanics , metallurgy
In this paper, we have set up a diode pumped rubidium MOPA system with a chain of two amplifiers. The experimental results show an amplified laser power of 26W with amplification factor of 16.3 and power extraction efficiency of 53% for a single amplifier, and an amplified laser power of 11W with amplification factor of 7.9 and power extraction efficiency of 26% for a chain of two amplifiers. The reason for lower performance of cascade amplification is mainly due to the limited total pump power, which will be not sufficient for efficient pumping when assigned from a single amplifier into two amplifiers. The situation could be well improved by increasing the seed laser power as well as the pump power for each amplifier to realize high efficient saturated amplification. Such MOPA configuration has the potential for scaling high beam quality alkali laser into high powers.