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Rare‐Earth Selenites
A selenite‐based ultraviolet nonlinear optical (UV‐NLO) material, Sc(HSeO3)3, reveals remarkably well‐balanced UV‐NLO properties such as the shortest absorption edge (≈214 nm) among NLO‐active selenites, wide band gap (5.28 eV), large phase‐matchable second‐harmonic generation (SHG) response (5 × KH2PO4 (KDP)), and sufficiently large birefringence (cal. 0.105 @1064 nm). More details...
Establishing high performance ultraviolet (UV) nonlinear optical (NLO) selenite crystals with well‐balanced properties is very challenging attributable to their strong absorption for UV light. Here a rare‐earth selenite, Sc(HSeO3)3, with excellent UV NLO properties is introduced. Sc(HSeO3)3 crystallizing in the polar NCS space group, Cc, features a 3D archetiture built up by interconnected ScO6 octahedra...
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