Open AccessMULTIPLE REFLECTION CORRECTION IN TRANSMITTED-SECOND HARMONIC GENERATION OF STILBAZIUM-SALT LANGMUIR-BLODGETT MONOLAYERS
Author(s) -
Liying Liu,
Gongming Wang,
Xingqiang Lü,
Zheng Jiabiao,
Wencheng Wang
Publication year - 1997
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.46.78
Subject(s) - monolayer , second harmonic generation , langmuir–blodgett film , optics , polarization (electrochemistry) , reflection (computer programming) , materials science , substrate (aquarium) , brewster's angle , molecular physics , optoelectronics , physics , chemistry , nanotechnology , laser , computer science , programming language , oceanography , brewster , geology
Transmitted second harmonic generation (SHG) study was made on Stilbazium salt Langmuir-Blodgett monolayer with different polarization combinations (s→p,p→p and 45°→s). The experimental data fitted in well with the transmitted SHG theoretical expressions.-And when the angle of incidence increased the theoretical data deviated from the experiments. This phenomenon may be due to the neglecting of the multiple reflection of fundamental light and harmonic light in the glass substrate on which LB monolayers were deposited. We also investigated the reasons for such deviation and gave a corrected explanation. It is found that multiple reflection in glass substrate should be considered when transmitted SHG was made with s-polarization and fixing detectors were used.