Chuangtian Chen,1,*
Siyang Luo,1,2
Xiaoyang Wang,1
Guiling Wang,1
Xiaohong Wen,1
Huaxing Wu,1,2
Xin Zhang,1,2
and Zuyan Xu1
1Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2Graduate University of the Chinese Academy of Sciences, Beijing 100190, China
Sizeable crystals of (RBBF) were obtained by the flux method. The crystal structure was determined by x-ray data and the space group was proven to be R32, belonging to the uniaxial class. The linear and nonlinear optical parameters, including the cutoff wavelength, refractive indices, phase-matching angles, and effective nonlinear optical coefficients were determined for the first time to our knowledge, and then the Sellmeier equations were also constructed. By using an RBBF prism coupling device (PCD), tunable fourth-harmonic output from a Ti:sapphire laser and the sixth harmonic of an Nd-based laser were also obtained with relatively high power.
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Space group, R32 (trigonal system, ); cell parameters, , , ; index ranges, , , ; range of θ, ; no. of observations of peaks with intensities , 323; R indices, , ; largest peak in final difference map, .
U(eq) is defined as one third of the trace of the orthogonalized tensor.
Table 2
Measured and Calculated Refractive Indices of RBBF with Δ as the Absolute Value of the Difference Between the Measured and Calculated Values
Space group, R32 (trigonal system, ); cell parameters, , , ; index ranges, , , ; range of θ, ; no. of observations of peaks with intensities , 323; R indices, , ; largest peak in final difference map, .
U(eq) is defined as one third of the trace of the orthogonalized tensor.
Table 2
Measured and Calculated Refractive Indices of RBBF with Δ as the Absolute Value of the Difference Between the Measured and Calculated Values