BBO
High Temperature form BBO (a-BaB2O4) is a negative uniaxial
crystal. Features include wide transparency and phase matching ranges, large
nonlinear coefficient, high damage threshold and excellent optical homogeneity.
Physical and optical property
Crystal Structure |
Trigonal, space group R3c |
Melting Point |
1095 (+/-5¡æ) |
Wavefront distortion |
l/8 per inch, measured by a double-pass interferometer
@ 632.8 nm |
Transition Temperature |
925 (+/-5¡æ) |
Hardness |
4.5 Mohs |
Density |
3.85 g/cm3 |
Absorption Coefficient |
< 0.1%/cm (at 1064 nm) |
Hygroscopic Susceptibility |
low |
Resistivity |
> 1011 ohm-cm |
Specifications
Dimension |
1x1-20x20mm |
Surface Quality |
20/10 Scratch and Dig |
Beam Deviation |
<3 arc min. |
Optical Axis Orientation |
+/-0.5 |
Flatness |
l/4 @ 632.8 nm |
Transmission Wavefront Distortion |
<¦Ë/4@632.8nm |
AR-coating |
R<0.5% |