Open AccessGENERATION OF TUNABLE VUV LASER NEAR 125nm BY FOUR WAVE SUM MIXING IN Hg VAPOR
Author(s) -
Zhang Yu-Ke,
Zhu Bao-Qiang,
Yinghua Zou
Publication year - 1991
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.40.1448
Subject(s) - mixing (physics) , buffer gas , four wave mixing , laser , materials science , phase matching , range (aeronautics) , atomic physics , frequency mixing , resonance (particle physics) , optics , signal (programming language) , laser beams , sum frequency generation , beam (structure) , physics , nonlinear optics , quantum mechanics , computer science , composite material , programming language
Tunable VUV laser (ω4=2ω1+ω3) in the range of 124.80-125.06nm is gene-rated by four-wave sum mixing in Hg vapor with Ar as buffer gas, when one of the pump beams (ω1) is tuned exactly to 61S0—71S0 two-photon resonance and another pump beam (ω3) on the blue side of 71S0—91P1 transition. The experimental results are analysed with the small signal four-wave sum mixing theory. The factors affecting the best phase matching condition and the methods to expand the tunable range of VUV output in the weak pump case are discussed.