SPECIFICATIONS

Dimension Tolerance

(W ± 0.1 mm) × (H ± 0.1 mm) × (L ±  0.2mm)

Angle Tolerance

< ± 0.5°

Parallelism

＜20"

Perpendicularity

＜5′

Clear Aperture

Central 90% of the diameter

Surface Quality (Scratch/Dig)

20/10 (MIL-PRF-13830B)

Flatness

<λ/8@633nm

Transmitted Wavefront Distortion

＜λ/4@633nm

Anti-Reflection Coating

According to customer requirements

CHEMICAL AND STRUCTURAL  PROPERTIES

Crystal Structure

Trigonal crystal system, space group  R3c, point group 3m

Lattice Parameter

a=5.148 Å , c=13.863 Å

Melting Point

1253℃

Mohs Hardness

5

Density

4.64 g/cm3

Thermal Conductivity

38W/mK

Thermal Expansion Coefficients

A, 2.0×10^-6/K

C, 2.2×10^-6/K

OPTICAL AND NONLINEAR OPTICAL  PROPERTIES

Transparency Range

420~5200nm

Therm-optic Coefficient ( λ in μm)

dno/dT = -0.874 × 10^-6

dno/dT = -0.874 × 10^-6

dne/dT = 39.073 ×10^-6

Absorption Coefficients

~ 0.1 % / cm @ 1064 nm

NLO Coefficients

d_eff =5.7 pm/V or ~14.6 × d₃₆ for frequency doubling 1300 nm

d_eff =5.3 pm/V or ~13.6 × d₃₆ for OPO pumped @ 1064 nm

d_eff =17.6 pm/V or ~45  × d₃₆  for quasi-phase-matched structure

Non-vanished NLO Susceptibilities

d₃₃ = 34.4 pm/V

d₃₁ = d₁₅ =  5.95 pm/V

d₂₂ = 3.07 pm/V

Sellmeier Equations (λ in μm)

n_o² =  4.9048 + 0.11768 / (λ² – 0.04750) – 0.027169λ²

n_e² =  4.5820+0.099169 / (λ² – 0.04443) – 0.021950λ²