LiInSe₂ — Lithium Indium Selenide
Lithium indium diselenide (LiInSe₂, LISe) is a new biaxial nonlinear-optical crystal in the orthorhombic system, point group mm2. Directional solidification or vertical Bridgman growth typically yields dark-red crystals about 20mm long and 10mm in diameter. Broad 0.43–13.2μm transmission, a large nonlinear coefficient and high damage threshold make it an excellent mid-IR nonlinear crystal. Containing the 6Li isotope, it also combines semiconductor/scintillator properties for room-temperature thermal-neutron detection.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal Structure | Typ: Orthorhombic Crystal System, Point Group mm2, Space Group Pna21 |
| Unit-Cell Parameters | typical:a=7.192~7.218Å，b=8.412~8.441Å，c=6.772~6.793Å |
| Melting Point | typical:904°C |
| Transmission Range | typical:0.43~13.2μm |
| Nonlinear Coefficient [@2.3μm] | typical:d₃₁=11.78pm/V，d₂₄=8.17pm/V(@2.3μm) |
| Room-Temperature Bandgap [Room Temperature] | typical:1.88~2.86eV |
| Room-Temperature Resistivity [Room Temperature; n-Type] | typical:~1×10¹⁰-1×10¹¹Ω cm (n-Type) |
| Refractive Index [@10μm] | Typ: nx=2.2015，ny=2.2522，nz=2.2566 |
| Laser Damage Threshold [1064nm; 10ns Pulses] | typical:~40GW/cm² (1064nm, 10ns Pulses) |
| Thermal Conductivity | typical:kx=4.73，ky=4.67，kz=5.45W/(m K) |
Applications
Datasheet
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