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)
Good mechanical and physical properties
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
HG provides:
The most advanced technical support
The most competitive price and quality discounts
Adequate stock
Quick delivery within 2 weeks
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
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 of normal use
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 of normal use