Lithium Iodate Crystal ( LiIO3 )

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Main Properties , Sellmeier Equations, Handling Precaustions

Lithium Iodate (LiIO3) crystal is an uniaxial nonlinear crystal with high nonlinear optical coefficients and wide transparency range. It is used to frequency double the low and medium power Ti:Sapphire, Alexandrite, Cr:LiSrAlF6 and Cr:LiCaAlF6 lasers. In some cases, it is used for frequency-doubling and -tripling of Nd:YAG lasers and auto-correlators for measuring ultrashort pulse width.

Main Properties

Transparency Range	0.3-5.0 mm
Piezoelectric Coeffi.	d_₃₆=1.39x10-8 esu/dyne
Density	4.487 g/cm3
Refractive Index	n_o=1.8517, n_e=1.7168 (l=1064 nm)
Effective SHG Coefficient	8.5 X d_₃₆(KDP)

Sellmeier Equations:

n (Lambda) = 3.4157+0.04703/(Lambda²-0.03531)-0.008801 * Lambda² ( Lambda in um)
n (Lambda) = 2.9187+0.03515/(Lambda²-0.02822)-0.003641 * Lambda²

CASIX grows large size LiIO3 crystals with high optical homogeneity. The new growth technique enables us to grow LiIO3 crystal at low cost so that the prices for our LiIO3 are low. We provide as-cut and polished LiIO3 crystals. The typical size is 8x8x15mm3, 10x10x15 mm3 or 10x10x20 mm3. Sealed housing with AR-coated windows is also available.

Handling Precautions:

1. The damage threshold of LiIO3 is low. Therefore, LiIO3 is not recommended for high power applications.

2. LiIO3 is highly hygroscopic. Please keep it in dry environment.

3. Tight focusing is not recommended because LiIO3 has small acceptance angles and large walk-off angle.