Basic properties:

Transparency Range

high transmittance from 0.45 ｕ m to4.8 ｕ m

Crystal structure

D4h

Latlice parameter

a ＝ b ＝ 7.1193 ? c ＝ 6.2892 ?

Density

4.22g /cm 3

Moths hardness

5 (glass-like)

Thermal Expansion coefficient

α a ＝ 4.43 × 10 -6 /k α c ＝ 11.37 × 10 -6 /k

Thermal optical coefficient

dna/dT ＝ 8.5 × 10 -6 /k dnc/dT ＝ 3.0 × 10 -6 /k

Thermal Conductivity coefficient

⊥ C:5.10w/m/k ‖ C:5.23w/m/k

Crystal class

positive uniaxial with no ＝ na ＝ nc; ne ＝ nc

Refractive Indices,Birefringent

Δ n ＝ ne － no

@0.63um

n o ＝ 1.9929 n e ＝ 2.2154 Δ n ＝ 0.2225

@1.30um

n o ＝ 1.9500 n e ＝ 2.1554 Δ n ＝ 0.2054

@1.55um

n o ＝ 1.9447 n e ＝ 2.1486 Δ n ＝ 0.2039

Sellmeier Equation( λ in μ m)

n o 2 ＝ 3.77834 ＋ 0.069736/( λ 2 － 0.04724) － 0.0108133 λ 2
n e 2 ＝ 4.59905 ＋ 0.110534/( λ 2 － 0.04813) － 0.0122676 λ 2

Warranty:

Strict quality control
Unbeatable price and quantity discount
Quick delivery
Free technical support

Standard specifications ：

Transmitting wavefront distortion

less than λ /8 @633nm

Dimension tolerance

（ W ± 0.1mm )*(H ± 0.1mm )*(L ± 0.1mm )

Angle tolerance

△θ <0.2 0 △Φ <0.2 0

Clear aperture

>90%

Flatness

λ /8@633nm

Scratch/Dig code

10/5

Parallelism

<20 ″

Perpendicularity

<5 ′

Coating

AR: 1.55 μ m R1.55<0.1%

Availability:

Size of boule crystal

φ 35 × 50mm 3

Size of crystal devices

according to the Requirement of the users