SPECIFICATIONS

Dimension Tolerance

(W±0.1mm)×(H±0.1mm)×(L±0.2mm/0.1mm)

Angle Tolerance

Δθ＜±0.2°；Δφ＜±0.2°

Parallelism

＜30"

Perpendicularity

＜10′

Surface Quality (Scratch/Dig)

20/10 (MIL-PRF-13830B)

Flatness

<λ/8@633nm

Anti-Reflection Coating

According to customer requirements

CHEMICAL AND STRUCTURAL PROPERTIES

Crystal Structure

tetragonal , 42m

Lattice Parameter

a=b=5.467Å, c=12.736Å

Melting Point

About 1040°C

Mohs Hardness

5.5

Density

4.17 g/cm³

Thermal Conductivity

35.89 W/mK

Thermal Expansion Coefficients

β‖,5×10^-6/K; β⊥,7.8×10^-6/K

OPTICAL AND NONLINEAR OPTICAL PROPERTIES

Transparency Range

0.74 – 12 um

SHG Phase Matchable Range

3177∼10357nm (Type I)

Absorption Coefficients

α<1.25px^-1 @2050-2100  nm

Angular Acceptance

30°（2um~12um）

NLO Coefficients

D36=68.9pm/V (at 10.6um) =75.0 pm/V  (at 9.6 um)

Non-vanished NLO Susceptibilities

d₃₆=75 ± 8 pm/V

Type Ⅰ  d_eeo=d₃₆ sin2θcos2φ

Type Ⅱ  d_oeo=d_eoo=d₃₆ sinθsin2φ

Sellmeier Equations (λ in μm)

no2(λ) = 4.64467+5.10087/(λ²-0.13656)+4.27777λ²/(λ²-1653.89)

ne2(λ) = 4.71539+5.26358/(λ²-0.14386)+2.37310λ²/(λ²-1000.82)