LiInS2 (LIS) Nonlinear Crystal
LiInS2 (LIS) Nonlinear Crystal
Lithium Thioindate (LiInS2 or LIS) is an AIBIIIC2VI ternary semiconductor crystallizing with mm2 symmetry. LiInS2 has a large nonlinear optical (NLO) coefficient, the non-linear characteristics of the crystals are close to AgGaS2 and AgGaSe2, but their crystal structures are different. LiInS2 crustal has a high laser damage threshold, and a wide transparent wavelength range, the useful transparency range of LiInS2 is 0.5–8 μm, which makes it an excellent mid-infrared NLO crystal. LiInS2 is pyroelectric as well, its electro-optical parameters are the base for using it as an effective electro-optical material. Three‐frequency collinear phase matching is possible in LiInS2, LiInS2 has large birefringence and low absorption in the THz frequency region is judged to be a potentially more useful optical nonlinear material than the analogous compound LiGaO2.
Specifications
| Parameter | Specifications |
|---|---|
| MAIN PROPERTIES: | data |
| Transparency range, μm | 0.35 - 12.50 |
| Point group | mm2 |
| Lattice parameters, Å | a = 6.893, b = 8.0578, c = 6.4816 Å |
| Density, g/cm3 | 3.5 |
| Mohs hardness | 5 |
| at 0.532 μm | nx= 2.1305, ny= 2.1668, nz= 2.1745 |
| at 1.064 μm | nx= 2.2353, ny= 2.2841, nz= 2.2919 |
| Non-linear coefficient, pm/V | d31 = 8.35, d32 = 8.3 |
| Optical damage threshold, GW/cm2 | ~1 (1064 nm, 10 ns) |
| Chemical properties | non-hygroscopic |
Data Sheet: LiInS2 (LIS) Nonlinear Crystal (PDF)
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