BIBO Laser Crystals

ostphotonics
2 min readNov 16, 2023

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BIBO( BiB3O6) Crystal is a newly developed Nonlinear Optical Crystal. It features a large effective nonlinear coefficient, a high damage threshold, and inertness to moisture. Its nonlinear coefficient is 3.5–4 times higher than that of LBO, and 1.5–2 times higher than that of BBO. It is a promising SHG crystal to generate blue laser output.

Applications of BIBO Laser Crystals

SHG and THG for medium and high power Nd: lasers at 1064nm

SHG and THG of high power Nd: lasers at 1342nm & 1319nm

SHG for the Nd: Lasers at 914nm & 946nm

Optical Parametric Amplifiers (OPA) and Oscillators (OPO) application

Advantages of BIBO Laser Crystals

Large effective nonlinear coefficient

High damage threshold

Inertness to moisture

Specifications of 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

Chemical and Structure Properties of BIBO Crystal

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

5.033 g/cm3

Thermal Expansion Coefficient

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

Optical and Nonlinear Optical Properties of BIBO Crystal

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 plane
Deff:3.0+/-0.1 pm/V
Angular acceptance:2.32 arad-cm
Walk-off angle:25.6 rad
temperature acceptance:2.17°C-cm

Sellmeier Coefficients

ni2(λ)=A+B / (λ2-C)-Dλ2 (λ in um)

A

B

C

D

n1

3.6545(4)

0.0511(2)

0.0371(3)

0.0226(1)

n2

3.0740(3)

0.0323(1)

0.0316(3)

0.01337(6)

n3

3.1685(3)

0.0373(1)

0.0346(3)

0.01750(8)

There are many wafers manufacturers, but we are one of the best choices for you.

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