Open AccessStudy on mechanisms for enhancement kinetics of lasing gases in an optimized sea led-off CO2 laser
Author(s) -
Cheng Cheng
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.3068
Subject(s) - lasing threshold , laser , materials science , excited state , atomic physics , relaxation (psychology) , kinetics , saturation (graph theory) , resonator , gain switching , optics , optoelectronics , physics , psychology , social psychology , mathematics , quantum mechanics , combinatorics
The kinetics of gases (CO2, N2 and He) in an optimized se aled-off CO2 laser are discussed in details. A comparison of numerical results shows that the po pulation of the laser levels is increased by optimizing the lasing gases, with t he increase of an excited N2 impacting to the upper laser level. Also , decreas ing the electron momentum transition frequency and increasing discharge current result in the increase of the relaxation of the upper rotational laser levels an d the decrease of the level lifetime, thus the lasing saturation intensity in a resonator is increased finally.