BBO Crystal
β-BBO Crystal—a widely used nonlinear crystal for frequency conversion in the ultraviolet, visible and near-infrared
BBO Crystal is a one of the most important nonlinear optical crystals, beta-barium borate (β-BaB2O4，β-BBO) combines many outstanding features such as its high nonlinear optical coefficients, low group-velocity dispersion, broad transparency range (189–3500 nm) and high damage threshold. This unique combination ensures β-BBO crystal a promising candidate for a wide range of nonlinear optical applications such as frequency converters and optical parametric oscillators. In the realm of quantum optics, β-BBO crystal can be used to generate entangled photon pairs and ten-photon entanglement.
BBO nonlinear crystal is a negative uniaxial crystal, which provides phase matching for various second-order interactions almost over its entire transparency range (from 185 nm to 3.3 µm, as deduced from the transmittance measurements using crystal samples of several mm thickness), making it a widely used crystal for nonlinear frequency conversion in the ultraviolet, visible and near-infrared. In that regard, BBO crystal is the most important nonlinear crystal for near infrared optical parametric chirped pulse amplifiers, which currently deliver few optical cycle pulses with high average and ultrahigh peak powers.
Parameter
| Property | Value |
| Chemical Formula | BaB2O4 |
| Crystal Structure | trigonal, 3m |
| Lattice Parameter | a=b=12.532Å,c=12.717Å, Z=6 |
| Mass Density | 3.85 g/cm3 |
| Moh Hardness | 4 |
| Melting Point | About 1095°C |
| Thermal Conductivity | 1.2 W/m/K (⊥c); 1.6 W/m/K (//c) |
| Thermal Expansion Coefficient | α,4×10-6/K; c,36×10-6/K |
| Birefringence | negative uniaxial |
| Property | Value |
| Transparency Range | 189 – 3500 nm |
| Absorption Coefficient | α<0.1%/cm @1064nm |
| Refractive Indices | |
| at 1.0642 μm | ne = 1.5425, no = 1.6551 |
| at 0.5321 μm | ne = 1.5555, no = 1.6749 |
| at 0.2660 μm | ne = 1.6146, no = 1.7571 |
| Sellmeier Equations(λ in μm) | no2(λ) = 2.7359+0.01878/(λ2-0.01822)-0.01354λ2 |
| ne2(λ) = 2.3753+0.01224/(λ2-0.01667)-0.01516λ2 | |
| Property | Value |
| SHG Phase Matchable Range | 409.6 ∼ 3500nm (Type I); 525 ∼ 3500nm (TypeII) |
| NLO Coefficients | d11= 5.8 x d36(KDP); d31 = 0.05 x d11; d22< 0.05 x d11 |
| deff(I)=d31sinθ+ (d11cos3φ – d22sin3φ)cosθ | |
| deff(II)=(d11sin3φ+ d22cos3θ)cos2θ | |
| Therm-Optic Coefficients | dno/dT = – 9.3 x 10-6/◦C |
| dne/dT = -16.6 x 10-6/◦C | |
| 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 μm | 5 GW/cm2 (10 ns); 10 GW/cm2 (1.3 ns) |
| at 0.532 μm | 1 GW/cm2 (10 ns); 7 GW/cm2 (250 ps) |
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| BBO AR Coating-Reflection | BBO P Coating-Reflection |
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| BBO Transmission Spectrum | SHG tuning curves of BBO |
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| OPO tuning curves of BBO (TypeI (ooe))with different pump light, namely 530 nm, 355 nm and 266 nm | OPO tuning curves of BBO (TypeII (eoe))with different pump light, namely 530 nm, 355 nm and 266 nm |
- The range of transmission is from 190 nm to 3500nm
- Good physical properties
- Appropriate mechanical properties
- Effective SHG(Second-harmonic generation) coefficient is large
- Damage threshold of 100 ps pulse with 10 J/cm2 at 1064 nm
- The range of phase matching is large from 409.6 nm to 3500nm
- Temperature bandwidth is about 55℃
- Optical homogeneity is high:δn≈10-6/cm
- Material Processing
266nm laser - Optical Communication
1600nm laser - Radar and Ranging
1064nm,532nm,355nm laser - Medical Applications
532nm laser
1064nm/532nm laser
| Collinear and non-collinear sum-frequency mixing in β-BBO for a tunable 195–198 nm all-solid-state laser system Appl. Phys. B 61,529-532 (1995) |
| Consideration of angular acceptance angle in BBO crystal on a highly efficient second harmonic generation Optics & Laser Technology Volume 30, Issues 3–4, April–June 1998, Pages 189-192 |
| Generation of 125 mW frequency stabilized continuous-wave tunable laser light at 295 nm by frequency doubling in a BBO crystal Optics Communications Volume 213, Issues 4–6, 1 December 2002, Pages 347-350 |
| Characterization of OPCPA with BBO crystal for femtosecond Ti:sapphire laser pulses CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671) |
If you can’t find the Literature you want, Contact us to get the PDF Get the Literature
| Theoretical investigation of phase-mismatched second-harmonic conversion efficiency in BBO crystal Optik Volume 161, May 2018, Pages 196-203 |
| Characterization of nonlinear optical parameters of KDP, LiNbO3 and BBO crystals Optics Communications Volume 229, Issues 1–6, 2 January 2004, Pages 403-412 |
| Characterization of nonlinear refractive indices of KDP, KTP, LiNBO/sub 3/ and BBO crystals at 1064 nm and 532 nm CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671) |
| Nonlinear LBO and BBO crystals for extreme light sources 2010 International Conference on Advanced Optoelectronics and Lasers |
| Sum and difference frequency generation of white light continuum with the ps pulses of Nd+3:YAG laser in a thick BBO crystal Optics Communications Volume 278, Issue 1, 1 October 2007, Pages 175-179 |
| 210 nm ultraviolet generation using blue-violet laser diode and BBO SHG crystal CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671) |
| Observation of second harmonic generations from x-cut BBO whispering gallery mode resonators IEEE Photonics Conference 2012 |
| 1.3 Waverage power at 255 nm by second harmonic generation in BBO pumped by a copper HyBrID laser Optics Communications Volume 132, Issues 3–4, 1 December 1996, Pages 302-306 |
| Beta barium borate (BBO) Appl. Phys. A 52, 359-368 (1991) |
| Reduction of the spectral width and beam divergence of a BBO-OPO by using collinear type-II phase matching and back reflection of the pump beam Appl Phys B (2012) 108:283–288 DOI 10.1007/s00340-012-5036-3 |
| Generation of femtosecond tunable radiation from 380 nm to 450 nm via cascaded wave-mixing in a seeded 405-nm pumped type-I BBO noncollinear optical parametric amplifier CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671) |
| Harmonic and sum-frequency generation of pulsed laser radiation in BBO, LBO, and KDP Appl.Phys.B86,275–278(2007) |
| Detection of ∼1 atto-joule signal pulse at 532 nm using a picosecond collinear BBO optical parametric amplifier Optics Communications Volume 291, 15 March 2013, Pages 329-333 |
| Efficient generation of tunable VUV laser radiation below 205 nm by SFM in BBO Appl. Phys. B 55, 419-423 (1992) |
| Femtosecond noncollinear and collinear parametric generation and amplification in BBO crystal Appl. Phys. B 70, 163–168 (2000) / Digital Object Identifier (DOI) 10.1007/s003409900108 |
| Highly efficient deep ultraviolet generation by sum-frequency mixing in a BBO crystal pair Indian Academy of Sciences |
| Direct evidence of the noninstantaneous response of n/sub 2/ induced by cascading phenomena during SHG of femtosecond pulses in a BBO crystal Conference on Lasers and Electro-Optics, 2003. CLEO ’03 |
| Efficient broadband 400 nm noncollinear second harmonic generation of chirped femtosecond laser pulses in BBO and LBO 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC |
Want to get more information about what kind of BBO crystals crylink have supplied?
Size: 3x3x20 mm
Orientation: Z-cut
Coating: AR/AR@1064nm
Size: 3x3x20 mm
Orientation: Z-cut
Angle: θ=0°,φ=0°
Coating: S1/S2:AR@1030nm; S3/S4:Cr+Au
Size: 6x6x1/4/5 mm
Orientation: XZ plane
Angle: θ=23.4°,φ=0°, Type Ⅰ
Wenyu says
Hi,
I am a postdoc scholar at Caltech. We are looking for a BBO crystal to generate polarization entangled photon pair. Our pump is a 266nm, 10ps pulsed laser (repetition rate is 10 kHz). We would prefer type-II non-colinear configuration as entanglement can be generated directly from the crystal without the need for post-selection. Will you be able to produce such crystal？Thank you very much!
Best regards,
Wenyu
Laser-CryLink says
Hi,Wenyu,Our sales wiill contact you soon.