LiTaO3 is an E-O crystal widely used for E-O devices, due to its good optical NLO and E-O        properties, as well as high damage threshold. DeLn optics supplies high quality LiTaO3 wafers with the following specifications for standard applications. We can also offer other                  specifications upon request.

Crystal Structure:	Trigonal, space group R3c,Point group 3m
Cell Parameters:	a=5.154Å,c=13.781Å
Melting point	1650℃
Curie Temperature:	607℃
Mohs hardness:	5.5
Density:	7.46 g/cm3
Dielectric Constant:	ξ11/ξ0: 51.7
	ξ33/ξ0 :44.5
Elastic Stiffness Coefficient:	CE11 :2.33(X 1011 N/m2)
	CE33 :2.77(X 1011 N/m2)
Piezoelectric Strain Constant:	d22 :2.4(X 10-11 C/N)
	d33 :0.8(X 10-11 C/N)
Transmission range:	400-4500nm
Electro-optical coefficients:	r33= 30.4pm/V
Refractive index at 632.8nm:	no=2.176,ne=2.180

  Typical Specifications:

Diameter	100.0±0.5 mm,  76.2±0.5 mm
Thickness	0.50±0.05 mm,  1.0±0.05, 0.79±0.01,
	0.71±0.01 mm,  0.66±0.1
Bending degrees	≤10 μm
Taper	≤20 μm
Axially accuracy	±0.20
Base margin and direction	Datum	≤±0.02
	The length of the base	(a) 22±2 mm
		(b) 32±2 mm
Surface finishing quality	Chip surface	Both sides polished 10/5