optical grade LT wafer

Orientation

X&Z-cut ±0.2°

Diameter

50.8/76.2/100 ±0.3mm

Orientation Flat(OF)

22mm ±2mm Perpendicular to X ±0.2°

Second Refer.Flat(RF)

10mm±3 mm: Cw270°±0.5°from

Cw315°±0.5°from

Thickness

500um ±5um /1000um ±5um or more

Surface

Double sides polished S/D:20/10

TTV

≤ 10um

WARP

≤ 25um

Edge Beveling

Edge Rounding

Crystal symmetry

Trigonal, 3m

Lattice constant, A

a = 5.154 c = 13.783

Density, g/cm3

7.45

Melting point , °C

1650

Curie point , °C

610

Mohs hardness

6

Color

Colorless or light yellow

Thermal expansion coefficient, 10-6/ °C

aa = 16 ac = 4

Thermal conductivity , mW/cm °C

46

Dielectric Constant (@ 100 KHz)

ea = 54 ec = 43

Transparency range, nm

400 - 5500

Refractive indices @ 633 nm

no = 2.175 ne = 2.180

Electro-optic coefficients pm/V @633 nm, high frequency

r33 = 33/r13 = 8/r22 = 20

Nonlinear optical coefficients p/m/V @ 1064 nm

d22 = 2.0/d31 = - 1/d33 = -21

Pyroelectric Coefficient:

-2.3 10-4 C/°C/m2

Optical homogeneity

~ 10-5

Absorption loss @ 1064 nm

< 0.15 %/cm