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BBO crystal combines very wide transparency, moderately
high nonlinear coupling, high damage threshold and good chemical and mechanical properties. BBO phase match
covers a wide range, yielding SHG from 190nm to 1780nm.
Physical and Chemical Properties |
| Crystal Structure |
Trigonal,
space group R3c |
| Cell Parameters |
a = b = 12.532Å,
c = 12.717Å, Z = 6 |
| Melting point (¡ãC) |
~ 1095 |
| Mohs hardness |
4 |
| Density (gram/cm3) |
3.85 |
| Hygroscopic Susceptibility |
low |
| Thermal Conductivity (W/m/K) |
¡Íc: 1.2, ¨Uc: 1.6 |
| Thermal Expansion Coefficients (K-1) |
¦Á11= 4 x 10-6, ¦Á33= 36 x 10-6 |
| Resistivity (ohm • cm) |
> 1011 |
| Relative Dielectric Constant |
¦Ås11/¦Å0= 6.7, ¦Ås33/¦Å0= 8.1 |
Optical and Nonlinear Properties |
| Transparency Range |
190-3500
nm |
| Phase Matching Range |
409.6-3500nm |
| Electro-Optics Coefficients (pm/V) |
¦Ã22= 2.7 |
| Thermo-Optic Coefficients (¡ãC-1) |
dno/dT= -16.6 x 10-6, dne/dT = -9.3 x 10-6 |
Sellmeier
Equations(lin mm) |
no2= 2.7359 + 0.01878/(¦Ë2-0.01822) - 0.01354¦Ë2
ne2= 2.3753 + 0.01224/(¦Ë2- 0.01667) - 0.01516¦Ë2 |
| Effective Nonlinear Optical Coefficients |
deff(I) = d31sin¦È+ (d11cos3¦Õ)cos¦È
deff(II) = (d11sin3¦Õ+ d22cos3¦È |
| Main Applications |
- 2nd, 3rd, 4th and 5thHarmonic Generation of Nd lasers
- 2nd, 3rd and 4th Harmonic Generation of Ti:Sapphire and Alexandrite lasers
- SHG and SFG of Argon, Cu vapor and Ruby lasers
- Optical Parametric Amplifiers (OPA) and Optical Parametric Oscillators (OPO)
- Electro-Optic Pockels cells
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OSICO Specifications |
| Apertures |
Up to 20x20mm2 |
| Length |
Up to 25mm |
| Dimension Tolerance |
(W¡À0.1mm) x ( H¡À0.1mm) x (L+0.2mm/-0.1mm) |
| Phase Matching Angle Tolerance |
¦¤¦È< 0.25o, ¦¤¦Õ< 0.25o |
| Flatness |
¦Ë/10 @ 633nm |
| Transmitted Wavefront Distortion |
< ¦Ë/8 @ 633nm |
| Surface Quality |
10/5 scratch/dig |
| Parallelism |
< 20 arc seconds |
| Perpendicularity |
< 5 arc minutes |
| Clear Aperture |
90% central area |
| Edge Bevel |
0.15mm x 45¡ã¡À5¡ãchamfer |
| AR Coatings |
R < 0.2% at 1064nm, R < 0.5%
at 532nm |
| Guaranteed Damage Threshold of AR
Coating |
500 MW/cm2for 1064nm,
10ns pulse, 10Hz |
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