Open AccessTunable high efficiency broadband second-harmonic conversion in quasi-phase matching
Author(s) -
Ming Yin,
Shouhuan Zhou,
Guoying Feng
Publication year - 2012
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.61.234206
Subject(s) - energy conversion efficiency , broadband , materials science , harmonic , quasi phase matching , phase (matter) , optics , wavelength , second harmonic generation , optoelectronics , physics , acoustics , laser , quantum mechanics
High efficiency broadband second-harmonic conversion plays an important role in communication, signal processing, spectroscopy and so on. In general, the study of high efficiency broadband second-harmonic conversion focuses on a few of wavelengths. For obtaining tunable high efficiency broadband second-harmonic conversion in quasi-phase matching, the group-velocity and quasi-phase matched condition are analyzed. The temperature effect on high-efficiency broadband second-harmonic conversion in types 0 and Ⅰ quasi-phase matched condition for 5 mol% periodically poled LiNbO3 and periodically poled LiNbO3 is studied. The results show that 15 nm and 341 nm tunable high efficiency broadband second-harmonic conversions are obtained in types 0 and Ⅰ quasi-phase matched conditions for 5 mol% periodically poled LiNbO3; 44 nm and 98 nm tunable high efficiency broadband second-harmonic conversions are obtained in types 0 and Ⅰ quasi-phase matched condition for periodically poled LiNbO3. The range of high efficiency broadband second-harmonic conversion wavelength is expanded.