BBO Crystal

BBO (beta-BaB2O4) is an excellent non-linear crystal for frequency-doubling (SHG) of Visible and Near IR laser light, OPO/OPG/OPA pumped by ultrafast pulses of wavelengths in the Near IR to UV, and sum-frequency mixing (SFM) into the Visible to the deep UV. BBO is one of the few practical crystal for use below 500 nm in SHG and SFM.

BBO is very good for tunable laser sources, such as ultrafast Ti:Sapphire or dye lasers. And it is also widely used for SHG, 3HG, 4HG, and autocorrelation of femtosecond and picosecond Ti:Sapphire lasers; SHG, 3HG, 4HG, 5HG of YAG lasers at 1064 nm and 1320 nm to yield output of 212-660nm; SHG of tunable dye or solid-state laser sources from 410-750 nm to yield output of 205-375 nm,

FEATURES:

Broad phase matchable range from 409.6 nm to 3500 nm;

Wide transmission region from 190 nm to 3500 nm;

Large effective second-harmonic-generation (SHG) coefficient

High damage threshold;

Wide temperature-bandwidth of about 55℃.

Crystal Structure

Crystal Structure	Trigonal, space group R3c
Cell Parameters	a = b = 12.532Ã, c = 12.717Ã…, Z = 6
Melting point	1095+ 5°C
Transition temperature	925+ 5°C
Optical homogeneity	d n ~ 10-6/cm
Mohs hardness	4
Density	3.85 g/cm3
Absorption Coefficient	< 0.1%/cm (at 1064nm)
Specific heat	490 J/kg/°C
Hygroscopic susceptibility	low
Thermal expansion coefficients	a, 4 x 10-6/K; c, 36 x 10-6/K
Thermal conductivity	Perpendicular to c, 1.2 W/m/°C Parallel to c, 1.6 W/m/°C

Linear Optical Properties

Transparency range	189-3500 nm
Refractive indices:	ne = 1.5425, no = 1.6551 @ 1064 nm ne = 1.5555, no = 1.6749 @ 532 nm ne = 1.6146, no = 1.7571 @ 266 nm
Therm-optic coefficients	dno/dT = -9.3 x 10-6/°C dne/dT = -16.6 x 10-6/°C
Sellmeier Equations (l in mm)	no2 (l) = 2.7359 - 0.01354l2+ 0.01878/(l2-0.01822) ne2(l) = 2.3753 - 0.01516l2+ 0.01224/(l2-0.01667)

Nonlinear Optical Properties

Phase-matchable output wavelength	189 - 1750 nm
NLO coefficients	d11 = 5.8 x d36(KDP) d31= 0.05 x d11 d22 < 0.05 x d11
Electro-optic coefficients	y11 = 2.7 pm/V
Half-wave voltage	48 KV (at 1064 nm)
Damage threshold	5 GW/cm2 (10 ns) @1064nm 10 GW/cm2 (1.3 ns) @ 1064 nm 1 GW/cm2 (10 ns) @532 nm 7 GW/cm2 (250 ps) @ 532 nm

Capability:

1. Optical

Specification	Standard	High Precision
Dimensions	Size: Up to 20x20mm2 Thickness: 0.01mm to 25mm
Dimension Tolerance	+/-0.1mm	+/-0.01mm
Wavefront Distortion	λ/8	λ/8
Flatness	λ/10	λ/10
Surface Quality	10/5	10/5
Orientation	+/-0.3°	+/-0.1°
Parallelism	20’’	10’’

2. Coating

Specificationg
Type	AR Coaing or P Coating or Au Coating
Damage Threshold	>500MW/cm2

BBO Crystal

BBO Crystal

Products Details

BBO Crystal

FEATURES:

Crystal Structure

Linear Optical Properties

Nonlinear Optical Properties

Capability:

1. Optical

2. Coating