BIBO Laser Crystals

Tolerance of cutting angle

△θ≤±0.25°,△φ≤±0.25°

Dimension tolerance

(W±0.1mm)x(H±0.1mm)x(L+0.5mm/-0.1mm) (L≥2.5mm)

(W±0.1mm)x(H±0.1mm)x(L+0.1mm/-0.1mm) (L<2.5mm)

Transmitting wavefront distortion

λ/8 @ 633 nm

Clear aperture

> 90% central area

Flatness

λ/8 @ 633 nm

Surface quality:Scratch/Dig

10/5 to MIL-O-13830A

Parallelism

better than 20 arc seconds

Perpendicularity

5 arc minutes

Clear Aperture:

> 90%

Chamfer:

< 0.1 mm @ 45°

Size

Upon customer request

Coating

AR/PR coating upon customer’s request

Damage Threshold

>0.3GW/cm2 at 1064nm, TEM00, 10ns, 10Hz

Quality Warranty Period

One year under proper use

Crystal Structure

Monoclinic, Point Group 2

Lattice Parameter

a=7.116Å,b=4.993Å, c=6.508Å, β=105.62° ,Z=2

Melting Point

726°C

Melting Point

726°C

Density

Thermal Expansion Coefficient

αa=4.8x10^-5 /K, αb=4.4x10^-6 /K, αc=-2.69x10^-5 /K

Transparency Range

286-2500nm

Absorption Coefficient

<0.1%/cm at 1064nm

Physical Axis

X//b,(Z,a)=31.6°,(Y,c)=47.2°

SHG of 1064/532

Phase matching angle:168.9° from the z-axis in the YZ planeDeff:3.0+/-0.1 pm/VAngular acceptance:2.32 arad-cmWalk-off angle:25.6 radtemperature acceptance:2.17°C-cm

Sellmeier Coefficients

ni2(λ)=A+B / (λ2-C)-Dλ2 (λ in um)

A

B

C

D

n1

n2

n3