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LiTaO3 Crystals
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LiTaO3 Crystals
    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. CASTECH supplies high quality LiTaO3 boule and wafers with the following specifications for standard applications. We can also offer other specifications upon request.

 Basic Properties of LiTaO3

Crystal Structure:

Trigonal, space group R3c,Point group 3m

Cell Parameters:

a=5.154?,c=13.781?

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:

                                          Type

Specifications

Boule

Wafer

Diameter

Φ3"

Φ4"

Φ3"

Φ4"

Length or Thickness

≤100

≤50

≤0.35-0.5

Orientation

127.86°Y, 64°Y, 135°Y,X,Y,Z, and other cut

Ref.Flat Orientation

X,Y

Ref.Flat Length

22±2mm

32±2mm

22±2mm

32±2mm

Front Side Polishing

 

Mirror polished 5-15?

Back Side Lapping

 

0.3-1.0μm

Flatness(μm)

 

≤15

Bow(μm)

 

≤25

Contact US

#515,Tianhui Building, Yeqing 1st Road Longgang Zone, Shenzhen City
Guangdong,China,518000

TEL:+86-755-33295277

FAX:+86-755-33295277

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