Linear and Nonlinear Optical Properties of K₃B₆O₁₀Br Single Crystal: Experiment and Calculation

Abstract

The experimental and theoretical analysis of linear and nonlinear optical properties of K 3 B 6 O 10 Br (KBOB), with a moderate birefringence that is suitable for UV coherent light generation and optical parametric oscillators, is presented in detail. The second-order nonlinear optical coefficients were measured by the Maker fringe method and the refractive indices dispersion curves were deduced by the minimum deviation technique at 16 different monochromatic sources from UV to NIR, and then the type I and type II phasematching curves of second, third, and fourth harmonic generation (SHG, THG, and FHG) were calculated. Moreover, the correlations of crystallographic and crystallophysical axes were determined. On the basis of the density functional theory (DFT), the first-principles calculations have been employed successfully to study the structural and electronic properties of KBOB. In addition, to gain further insight into the structure−property relationship, the SHG density method was adopted to analyze the origin of the nonlinear optical response of KBOB.

Linear and nonlinear optical properties of aluminum borate crystal Al5BO9: Experiment and calculation

“…Since the crystal structures directly affect the properties of materials, many strategies were used to synthesize promising optical materials. [10][11][12][13][14][15][16] Recently, some novel aluminum borate crystals with excellent NLO properties have been reported, such as K 2 Al 2 B 2 O 7 , 17,18 BaAl 2 B 2 O 7 , 18 and BaAlBO 3 F 2 . 19 With rapid development of science and technology, the researchers still endeavor to design new NLO materials.…”

K5B19O31: A Deep‐Ultraviolet Congruent Melting Compound

“…The birefringence value (Δ n = n z ‐ n x ) varies from 0.05@1064 nm to 0.051@532 nm. The values are large or comparable to other potassium containing borates, for instance K 3 B 6 O 10 Br (0.046@1064 nm), K 5 Ba 10 (BO 3 ) 8 F (approaching zero), etc. Hence, K 5 B 19 O 31 is a potential deep‐UV birefringent crystal.…”

A Seedless Method for Gold Nanoparticle Growth inside a Silica Matrix: Fabrication of Materials Capable of Third‐Harmonic Generation in the Near‐Infrared

“…Note that this is a good result, taking into account that it was obtained for an amorphous material. The borate‐based monocrystals,,, which are considered as the best frequency triplers, although used in phase‐matched configuration, exhibit roughly only an order of magnitude larger conversion rates in the near‐IR domain for light intensities just below the damage threshold.…”