b-Barium-Borate crystals (BBO) combine wide transparency range, large nonlinear coupling, wide thermal acceptance bandwidth, high laser damage threshold and good mechanical properties.
Applications:
Second harmonic generation (SHG) from UV down to about 2.1 mm
Broadly tunable optical parametric oscillators (OPOs) and amplifiers (OPAs)
Auto correlation systems
| BBO SHG @ 532 nm | BBO SHG @ 800 nm | BBO THG @ 800 nm |
| Chemical formula | b-BaB2O4 | |
|---|---|---|
| Space group | R3c | |
| Lattice parameters, A | a = 12.532 b = 12.717 |
|
| Mohs hardness | 4 | |
| Density, g/cm3 | 3.84 | |
| Transparency range, nm | 190 - 3300 | |
| Refractive indices: | ne | n0 |
|
1.5425 1.5555 1.5775 1.6146 1.6746 |
1.6551 1.6749 1.7055 1.7570 1.8470 |
| Non-linear coefficients, pm/V | d11 = 2.3 d31 = 0.07 d11 |
|
| Optical damage threshold (532 nm, 15 ns) | 5.4 GW/cm2 | |
BTO Crystals
BBO crystals -
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LiNbO3 wafers -
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Rutile coupling
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