BBO crystals
Main features
- Broad transparency ranges from 188 nm to 5,2 µm (reasonable transparency @3 µm - 5,2 µm for few tens µm thick crystals)
- The broad phase-matchable range for various second-order nonlinear interactions over almost the entire transparency range
- Wide thermal acceptance bandwidth
- Highest nonlinearity of all UV nonlinear crystals
- The high laser-induced damage threshold
- Ultrathin crystals available for few optical cycle laser pulses
- Custom size, orientation, and coatings are available upon request
Application examples
- Harmonic generation (up to fifth) of pulsed Nd-doped crystal-based lasers
- Frequency doubling, a tripling of pulsed Ti:Sapphire, Yb-doped, dye lasers
- Widely tunable type I and II OPO
- Characterization of ultrashort laser pulses by FROG, XFROG, SPIDER, dispersion scan, chirp scan methods
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- Description
- Properties
- Specifications
- References
BBO crystal transparency ranges from 188 nm to 5,2 µm, which includes reasonable transparency from 3-5,2 µm for few tens µm thick crystals, while their phase-matchable range spans almost over the entire transparency range. Combined with other magnificent properties of BBO, it is favorable for numerous nonlinear parametric applications, e.g. harmonic generation of pulsed Yb-doped crystal-based lasers and frequency doubling, a tripling of Ti:Sapphire lasers, widely tunable type I and II OPO. It is worth to mention that BBO crystals have the highest nonlinearity in the UV range out of all common nonlinear crystals.
| Physical and optical properties | |
|---|---|
| Chemical formula | β-BaB2O4 |
| Crystal structure | Rhomboedral, 3m |
| Lattice parameters | a=12,532 Å, c=12,717 Å |
| Optical symmetry | Negative uniaxial (no>ne) |
| Density | 3,85 g/cm3 |
| Mohs hardness | 4-4,5 |
| Transparency range | 188 nm – 5,2 µm, reasonable from 3 µm to 5,2 µm for thin crystals (few tens of µm) |
| Sellmeier equations @188 nm - 5,2 µm range (λ in µm) | no2 = 1 + 0,90291 λ2/(λ2 - 0,003926) + 0,83155 λ2/(λ2 - 0,018786) + 0,76536 λ2/(λ2 - 60,01); ne2 = 1 + 1,151075 λ2/(λ2 - 0,007142) + 0,21803 λ2/(λ2 - 0,02259) + 0,656 λ2/(λ2 - 263) |
| Refractive indices | no = 1,6551; ne = 1,5426 |
| BBO crystals | |
|---|---|
| Orientation accuracy | <30 arcmin |
| Clear aperture | >90% |
| Face dimensions tolerance | +0,0/-0,1 mm |
| Parallelism error | <20 arcsec |
| Perpendicularity error | <5 arcmin |
| Protective chamfers | <0,1 mm at 45° |
| Surface quality | 10-5 S-D |
| Wavefront distortion | <λ/[email protected],8 nm |
| Coatings | Low dispersion protective coatings or antireflective coatings on both sides |
| Laser-induced damage threshold | >500 MW/cm2@1064 nm, 10 ns |
| UVFS support | Crystals with <0,1 mm thickness are optically contacted to 0,5-1 mm UVFS support |
| Mount | Mounted in ⌀25,4 mm black anodized aluminum mount |
| Support | Crystals thinner than 0,1 mm are optically contacted onto UVFS support |
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Face dimensions
Length
Theta
Phi
Coatings
Application
SKU
PRICE
QUANTITY
6x6 mm
1,5 mm
23,4°
90°
AR/[email protected]+1030 nm
[email protected] nm, 150 fs, type I
9449
410 €
6x6 mm
0,15 mm
32,5°
90°
AR/[email protected]+1030/343 nm
[email protected] nm, 50 fs, type I
9450
630 €
6x6 mm
0,25 mm
32,5°
90°
AR/[email protected]+1030/343 nm
[email protected] nm, 100 fs, type I
9451
580 €
6x6 mm
0,55 mm
32,5°
90°
AR/[email protected]+1030/343 nm
[email protected] nm, 200 fs, type I
9452
470 €
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