Open AccessEffect of pump laser intensity on optically pumped D2O gas terahertz laser
Author(s) -
Zishu He,
Jianquan Yao,
Huafeng Shi,
Huang Xiao,
Xiaobing Luo,
Shaoji Jiang,
Jiànróng Lǐ,
Peng Wang
Publication year - 2007
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.56.6451
Subject(s) - tera , laser , far infrared laser , materials science , optics , self pulsation , intensity (physics) , laser pumping , gas laser , range (aeronautics) , injection seeder , physics , quantum mechanics , composite material
Based on the semi-classical theorythe pulsed-laser pumped D2O gas tera-Hz laser was theoretically analyzedthe relation between the intensity of pumping laser and the output tera-Hz laser light was studied and numerically calculated. According to the result of calculationthe intensity of the output tera-Hz laser light increased approximately linearly with that of the input laser in a certain rangebut gradually decreased because of the bottleneck effect when the intensity of the input laser exceeded a fixed valueand for given gas pressurecavity length and operating temperaturean optimal intensity of pumping laser exists. A frequency tuning range of the output signal occurred when the intensity of the input laser was strong enough.