BBO CRYSTAL

Angle tolerance:

Δθ< ± 0.5°; Δφ< ±0.5°

Dimensional Tolerance:

(W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2/-0.1mm)

Flatness:

<L/8 at 633nm                

Surface Quality(S/D):

10/5 before coating,  20/10 after coated

Parallelism:

< 20 arc seconds

Perpendicularity:

< 5 arc minutes

Wavefront Distortion:

<L/8 at 632.8nm                

Clear Aperture:

Central 95%

Bevel (leg width):

<0.15mm x 45degree                

Coating:

* Protective coating is required to prevent polished surfaces from fogging.

* Anti-reflective coating should be considered if low reflectivity is required.

Mount:

Black Anodized Aluminium

Cell Parameters

a = b = 12.5322Ä, c = 12.7172Ä, Z = 6

Melting Point

1095 +/-5°C

Transition Temperature

925 +/-5°C

Optical Homogeneity

Dn ≈10-6/cm

Mohs Hardness

4.5

Density

3.85 g/cm3

Absorption Coefficient

< 0.1%/cm (at 1064 nm)

Hygroscopic Susceptibility

low

Resistivity

> 1011 ohm-cm

Relative Dielectric Constant

εT11/ε0: 6.7, εT33/ε0: 8.1, Tan δ, < 0.001

Thermal Expansion Coefficients(in the range of 25℃- 900℃)

a, 4 x 10-6/K
c, 36 x 10-6/K

Thermal Conductivity

^c, 1.2 W/m/K; ||c, 1.6 W/m/K

NLO coefficients

d11 = 5.8 x d36(KDP)
d11 = 0.05 x d11, d22< 0.05 x d11

Electro-Optic Coefficients

g11 = 2.7 pm/V, g22, g31< 0.1 g11

Half-Wave Voltage

48 KV (at 1064 nm)

Damage Threshold
at 1.064 mm
at 0.532 mm

5 GW/cm2 (10 ns);
10 GW/cm2 (1.3 ns)1 GW/cm2 (10 ns);
7 GW/cm2 (250 ps)

Transparency Range

189 - 3500 nm

Refractive Indices
at 1.0642 mm
at 0.5321 mm
at 0.2660 mm

ne = 1.5425, no = 1.6551
ne = 1.5555, no = 1.6749
ne = 1.6146, no = 1.7571

Therm-Optic Coefficients

dno/dT = - 9.3 x 10-6/℃
dne/dT = -16.6 x 10-6/℃

ne2(λ) = 2.3753+0.01224/(λ2-0.01667)-0.01516 λ2

BBO optical properties

Transparence range

 189-3500nm

Second harmonic generation (SHG) range

 410-2400nm

Type I phase matching plane

 X-Z plane, φ=0°

Type I phase matching plane

 X-Z plane, φ=30°

1064nm THG --> 355nm

 4x4x7mm Type I, θ=31.3°, φ=0°; Type II q=38.6°, φ=30°

1064nm 4HG --> 266nm

 4x4x7mm Type I, θ=47.6°, φ=0°;

1064nm 5HG --> 213nm

 4x4x7mm Type I, θ=51.1°, φ=0°;

2) OPO and OPA pumped by harmonics of Nd

YAG lasers

532nm Pump --> 680-2600nm

 8x6x12mm Type I, θ=21°, φ=0°;

355nm Pump --> 410-2600nm

 8x6x12mm Type I, θ=30°, φ=0°; Type II, q=37°, φ=30°;

266nm Pump --> 295-2600nm

 8x6x12mm Type I, θ=39°, φ=0°;

600-440nm SHG --> 300-220nm

 8x4x7mm Type I, θ=55°, φ=0°;

444-410nm SHG --> 222-205nm

 8x4x7mm Type I, θ=80°, φ=0°;

700-1000nm THG --> 240-330nm

 5x5x0.2mm Type I, θ=42°, φ=0°;

700-1000nm FHG --> 210-240nm

 5x5x0.2mm Type I, θ=66°, φ=0°;

720-800nm THG --> 240-265nm

 6x4x7mm Type I, θ=48°, φ=0°;

488nm SHG --> 244nm

 4x4x7mm Type I, θ=55°, φ=0°, B-cut;

BBO001

4x4x7

I

22.8°

0°

AR/AR@1064&532nm

BBO002

4x4x7

I

47.6°

0°

AR/AR@532&266nm

BBO003

4x4x10

I

22.8°

0°

AR/AR@1064&532nm

BBO004

4x4x10

I

47.6°

0°

AR/AR@532&266nm

BBO005

5x5x2

I

29.2°

0°

AR/AR@800&400nm

BBO006

5x5x1

I

29.2°

0°

AR/AR@800&400nm

BBO007

5x5x0.3-0.5

I

29.2°

0°

AR/AR@800&400nm

BBO008

5x5x0.1

I

29.2°

0°

AR/AR@800&400nm