首页|Two non-centrosymmetric scandium borate nonlinear optical crystals containing the B5O10 anion group
Two non-centrosymmetric scandium borate nonlinear optical crystals containing the B5O10 anion group
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NSTL
Elsevier
The spontaneous crystallization approach was used to synthesize two non-centrosymmetric scandium borate crystal materials, K3ScB6O12 (1) and K6NaSrSc2B15O30 (2), possessing the [B5O10]5? group. Both compounds exhibit wide band gaps of 5.75 and 5.92 eV, respectively. The second harmonic generation (SHG) effects of 1 and 2 are 1.3 and 0.7 times that of the commercial material KH2PO4 (KDP), respectively. According to the Kurtz-Perry approach, 2 demonstrates type-I phase-matchable. First-principles calculations on 2 are done to better understand the link between structure and performance. The calculated results reveal that the discrete arrangement of [B5O10]5? groups and the distorted ScO6 polyhedra in the structure are mainly responsible for the SHG response of 2. Furthermore, since 1 and 2 possess short ultraviolet (UV) cut-off edges, they may be applicable as nonlinear optical (NLO) materials in the UV region.
Beijing Center for Crystal Research and Development Key Lab of Functional Crystals and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences
NSTL
Elsevier
