Producer information
Company:
HG Optronics., INC. |
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Address:
3F 4Bldg.M9511 Industrial Park, Mawei,Fuzhoou,350015, China |
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Phone:
+86-591-88023630 |
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Beta-Barium Borate (Beta-BaB2O4, BBO) Crystal, nonlinear crystal
· The main advantages of BBO:· Broad phase matching second-harmonic-generation (SHG) range from 409.6nm to 3500nm· Wide transmission region from 190nm to 3500nm· Large effective SHG coefficient· High damage threshold of 10 GW/cm2 for 100 ps pulse-widths at 1064nm· High optical homogeneity with Dn 10-6/cm2· Wide temperature bandwidth of about 55° (for type I SHG 1064nm)· The main application of BBO crystals:· Second, third, fourth and fifth harmonic generation of Nd:YAG· Frequency-doubling, -tripling and -mixing of dye lasers· Optical parametric amplifiers (OPA) and optical parametric oscillators (OPO)· Second, third, fourth and fifth harmonic generation of Ti: sapphire and alexandrite· Frequency-doubling of Argon ions, Cu vapor and ruby lasers· External intra-cavity SHG· The main properties of BBO crystals：· BBO is a negative uniaxial crystal, and its o-ray refractive coefficient (no) is higher than that of the e-ray (ne) which can be calculated by Selleimer equation (λ in μm):· no2 = 2.7359 +0.01878 / (λ2-0.01822) -0.01354 λ2· ne2 = 2.3753 +0.01224 / (λ2-0.01667) -0.01516 λ2· BBO crystal in the Nd:YAG lasers:· BBO is an efficient NLO crystal for the second, third and fourth harmonic generation of Nd:YAG lasers, and the best NLO crystal for the fifth harmonic generation at 213nm. Conversion efficiency more than 70% for SHG, 60% for THG, 50% for 4HG, and 200mw output at 213nm have been obtained, respectively. Besides, BBO is also an efficient crystal for the intra- cavity SHG of high power Nd:YAG lasers.· HG’s warranty on BBO specification:· Wavefront distortion: less than λ / 8 @ 633nm· Dimension tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L ± 0.2mm/-0.1mm)· Aperture:> 90% central diameter· Flatness: λ / 8 @ 633nm· Finish: 10 / 5 to MIL-PRF-13830B· Parallelism: better than 20 arc seconds· Perpendicularity: 5 arc minutes· Angle deviation: △ θ ≤ ± 0.25 °, △ φ ≤ ± 0.25 °· Quality guarantee period: one year
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