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

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

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

deff =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)

no² =  4.9048 + 0.11768 / (λ2 – 0.04750) – 0.027169λ2

ne² =  4.5820+0.099169 / (λ2 – 0.04443) – 0.021950λ2