Lithium Iodate,Lithium Iodate Properties,LiIO3

Almaz Optics, Inc.
12 Chadsford Ct. Marlton, NJ 08053, USA
Tel: 856 797-0491, Fax: 856 797-0228
e-mail: mail@almazoptics.com

LITHIUM IODATE (a -LiIO₃)

Hexagonal modification of Lithium Iodate (a-LiIO₃) features wide transparency range and good nonlinear, acousto-optical and piezoelectric properties. The material is grown from close to pH neutral aqueous solution which provides for good optical homogeneity, absence of inclusions and absorption bands throughout the transmission range. This crystal is used in a number of applications including laser harmonics generation and frequency mixing to obtain tunable output at 3.0-5.4 m. Other applications are autocorrelators, AO devices and piezoelectric sensors.
The crystal is hydroscopic and requires protection from moisture.
Available optical components' sizes: up to 20 x 20 x 40 mm.

Main Properties

Chemical Formula	LiIO₃
Crystal Symmetry	Hexagonal
Lattice Constant, Å	a=5.4815 c= 5.1709
Density, g/cm³ at 293 K	4.5
Melting Temperature, K	693
Phase Transition Point, K	520
Transmission Range, m	0.31-5.5
Nonlinear Optical Coefficient @ 1064 nm, pm/V d₃₁ d₃₃	-7.1 -7.0
Thermal Expansion, 1/K at 300 K perpendicular Z parallel Z	28 x 10^-648 x 10^-6
Hardness (Mohs)	4
Optical Absorption @ 1064 nm, 1/cm	<0.005
Optical Damage Threshold at 1064 nm, MW/cm²	250

Refractive Index

l, nm	n_o	n_e
633	1.8830	1.7367
1064	1.8517	1.7168