BBO (beta-BaB2O4 ) crystal is an important nonlinear optical crystals with combination of unique optical properties.
Broad transmission and phase matching ranges, large nonlinear coefficient, high damage threshold and excellent optical homogeneity provide attractive possibilities for various nonlinear optical applications.
Advantages
Broad phase matching (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
Applications
SHG, THG, 4HG, 5HG of Nd lasers
SHG, THG, 4HG of Ti:Al2O3 and Alexandrite lasers
SHG, THG and Frequency-mixing of Dye lasers
SHG of Argon ion, Cu-vapor and Ruby lasers OPA and OPO
Pockels' Cell
Specifications
Tolerance of cutting angle
△θ≤±0.25°,△φ≤±0.25°
Tolerance of dimension
±0.1mm
Flatness
λ/8 @ 632.8nm
Surface quality
20/10 Scratch and Dig
Parallelism
20″
Perpendicularity
5′
Bevel/chamfer
<0.1mm@45deg.
CA
>95%
Coating
AR/P-coating Upon customer’s request
Notes
BBO has a low susceptibility to the moisture. The user is advised to provide dry conditions for both the use and preservation of BBO.
BBO is relatively soft and therefore requires precautions to protect its polished surfaces.
When angle adjusting is necessary, please keep in mind that the acceptance angle of BBO is small.
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