Premium
Thermo‐physical properties of nonlinear optical crystal K 3 B 6 O 10 Br
Author(s) -
Xia Mingjun,
Xu Bo,
Liu Lijuan,
Wang Xiaoyang,
Li Rukang,
Chen Chuangtian
Publication year - 2016
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576716001126
Subject(s) - refractive index , thermal expansion , crystal (programming language) , second harmonic generation , anisotropy , materials science , nonlinear optics , thermal conductivity , dispersion (optics) , optics , analytical chemistry (journal) , laser , chemistry , physics , optoelectronics , computer science , composite material , programming language , chromatography , metallurgy
The thermo‐physical properties of the nonlinear optical (NLO) crystal K 3 B 6 O 10 Br (KBB) were experimentally investigated, including specific heat, thermal conductivity, coefficient of thermal expansion and refractive index. The specific heat of KBB is lower than that of LiB 3 O 5 and higher than that of other borate NLO crystals, such as β‐BaB 2 O 4 , CsLiB 6 O 10 and CsB 3 O 5 , and KBB manifests a high damage threshold because of its lower temperature gradient during laser pulse irradiation. The thermal expansion coefficients were obtained as α x = 5.09 × 10 −6 K −1 and α z = 2.39 × 10 −5 K −1 , showing weaker anisotropy than those of commonly used NLO crystals. The temperature‐dependent Sellmeier dispersion equations of the refractive indices were also obtained, and the phase‐matching angles for second harmonic generation (SHG) at temperatures of 313, 343, 373, 403 and 433 K which were calculated from these equations are in good agreement with the experimental values. All results are indicative of the KBB crystal as a novel promising NLO crystal for high power SHG.