BBO crystal (beta barium borate) is one of the most commonly used nonlinear crystals for harmonic generation in ultrashort pulse applications. BBO crystals exhibit a range of exceptional properties, including high effective nonlinearity (deff) and a broad angular and thermal acceptance range.
Many crystals available from stock
Description
The BBO crystal (beta barium borate) is one of the most commonly used nonlinear crystals for harmonic generation in ultrashort pulse applications. BBO crystals exhibit a range of exceptional properties, including high effective nonlinearity (deff)1 and a broad angular and thermal acceptance range. BBO crystals are predominantly employed to generate the second and third harmonics of Ti:Sapphire and ytterbium-based lasers (Yb:KYW, Yb:CALGO, etc.). Another significant application of BBO crystals is in frequency conversion within optical parametric oscillators (OPOs). In recent years, BBO crystals and BiBO crystals have attracted attention for their potential use in Spontaneous Parametric Down-Conversion (SPDC).
Specifications
Physical and Optical Properties
| Chemical formula | β-BaB2O4 (beta barium borate) |
| Optical symmetry | negative uniaxial (no > ne) |
| Crystal structure | trigonal |
| Lattice constants | a = 12.53 Å, c = 12.72 Å |
| Density | 3.85 g/cm3 |
| Mohs hardness | 4.5 |
| Melting point | 1095 °C |
| Refractive index (at 1064 nm) | no = 1.6551, ne = 1.5426 |
| Thermal conductivity coefficient | K⊥c = 1.2 Wm-1K-1, K//c = 1.6 Wm-1K-1 |
| Specific heat (298 K) | C = 0.49 Jg-1K-1 |
| Termal expansion coefficient (298 K) | α⊥c = 4 x 10-6 °C-1, α//c = 36 x 10-6 °C-1 |
| Thermo-optic coefficient (293-353 K) | dno/dT = -16.6 × 10-6 °C-1, dne/dT = -9.3 × 10-6 °C-1 |
| Direct band-gap energy (293 K) | Eg = 6.2 eV |
| Transparency range | 190 – 3500 nm |
Standard manufacturing specifications
| Cut orientation error: | +/- 30 arcmin |
| Dimensions tolerance: | +/- 0.1 mm |
| Clear aperture: | > 85% of aperture dimensions |
| Surface quality: | 10-5 S-D |
| Surface flatness: | < λ/10 @ 633 nm |
| Parallelism error: | < 20 arcsec |
| Perpendicularity error: | +/- 5 arcmin |
Nonlinear Applications
SHG @ 1030 nm, Type 1
| Type 1 | 1030(o) + 1030(o) → 515(e) |
| Phase matching angle (293 K) | Theta (θ) = 23.4° , Phi (φ) = 90° |
| Effective nonlinearity | deff = 2.01 pm/V |
| Walkoff angle | 56.99 mrad (515(e)) |
| Angular acceptance | 0.55 mrad x cm |
| Thermal acceptance | 37.72 K x cm |
THG @ 1030 nm, Type 1
| Type 1 | 1030(o) + 515(o) → 343.3(e) |
| Phase matching angle (293 K) | Theta (θ) = 32.5° , Phi (φ) = 90° |
| Effective nonlinearity | deff = 2.01 pm/V |
| Walkoff angle | 74.11 mrad (343.3(e)) |
| Angular acceptance | 0.28 mrad x cm |
| Thermal acceptance | 14.04 K x cm |
SHG @ 800 nm, Type 1
| Type 1 | 800(o) + 800(o) → 400(e) |
| Phase matching angle (293 K) | Theta (θ) = 29.2° , Phi (φ) = 90° |
| Effective nonlinearity | deff = 2 pm/V |
| Walk-off angle | 68.06 mrad (400(e)) |
| Angular acceptance | 0.35 mrad x cm |
| Thermal acceptance | 19.61 K x cm |
THG @ 800 nm, Type 1
| Type 1 | 800(o) + 400(o) → 266.7(e) |
| Phase matching angle (293 K) | Theta (θ) = 44.3° , Phi (φ) = 90° |
| Effective nonlinearity | deff = 1.87 pm/V |
| Walk-off angle | 86.45 mrad (266.7(e)) |
| Angular acceptance | 0.18 mrad x cm |
| Thermal acceptance | 6.67 K x cm |
Products
Product | Dimensions | Length | Theta | Phi | Coatings | Mount | Price | Delivery | Quantity | |
|---|---|---|---|---|---|---|---|---|---|---|
| 8 x 8 mm | 0.3 mm | 50° | 90° | P/P | Mounted | 413.00€ | from stock | | | |
| 6 x 6 mm | 0.1 mm | 77.3° | 90° | P/P 515+343/206 nm | Ø 25.4 mm | 432.00€ | 6-7 weeks | | | |
| 6 x 6 mm | 0.15 mm | 54.5° | 90° | P/P 1030+257/206 nm | Ø 25.4 mm | 447.00€ | 6-7 weeks | | | |
| 6 x 6 mm | 0.2 mm | 77.3° | 90° | P/P 515+343/206 nm | Ø 25.4 mm | 424.00€ | 6-7 weeks | | | |
| 6 x 6 mm | 0.3 mm | 54.5° | 90° | P/P 1030+257/206 nm | Ø 25.4 mm | 445.00€ | 6-7 weeks | | | |
| 6 x 6 mm | 0.5 mm | 77.3° | 90° | P/P 515+343/206 nm | Ø 25.4 mm | 417.00€ | 6-7 weeks | | | |
| 6 x 6 mm | 1 mm | 23.4° | 90° | P/P 515-1030 nm | Ø 25.4 mm | 410.00€ | from stock | | | |
| 6 x 6 mm | 1.5 mm | 23.4° | 90° | AR/AR 515+1030 nm | Ø 25.4 mm | 430.00€ | from stock | | | |
| 6 x 6 mm | 2 mm | 23.4° | 90° | P/P 515-1030 nm | - | 390.00€ | from stock | | | |
| 8 x 8 mm | 2 mm | 23.4° | 90° | P/P 515-1030 nm | Ø 25.4 mm | 440.00€ | 4-6 weeks | | |
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