Open AccessTemperature-dependent Sellmeier equations of nonlinear optical crystal La_2CaB_10O_19
Author(s) -
Naixia Zhai,
Longwei Yin,
Guochun Zhang,
Yicheng Wu,
Chuangtian Chen
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.020641
Subject(s) - refractive index , optics , wavelength , crystal (programming language) , second harmonic generation , materials science , thermal , phase (matter) , angle of incidence (optics) , nonlinear optics , physics , thermodynamics , laser , quantum mechanics , computer science , programming language
The thermal dependence principal refractive indices ofLa(2)CaB(10)O(19) (LCB) crystal at wavelengths of 0.254, 0.365, 0.405, 0.480, 0.546, 0.644, 0.852, 1.014, and 2.325 μm were accurately measured by using the vertical incidence method within the temperature range from 25 to 170 °C. We derived equations of thermal refractive index coefficients as a function of wavelength that could be used to calculate the principal thermal refractive indices at different wavelengths. The temperature-dependent Sellmeier equations were also derived and used to calculate the phase-matching angles for the third-harmonic generation of LCB crystal at different temperatures. Theoretical and experimental phase-matching angles for the type I third-harmonic generation of LCB crystal at different temperatures were in good agreement.