- BBO (beta-BaB 2 O 4 ) is a nonlinear optical crystal with combination of number of unique features. Wide transparency and phase matching ranges, large nonlinear coefficient, high damage threshold and ..
NLO Crystals
BBO Nonlinear Crystals
Description
BBO (beta-BaB 2 O 4 ) is a nonlinear optical crystal with combination of number of unique features. Wide transparency and phase matching ranges, large nonlinear coefficient, high damage threshold and excellent optical homogeneity provide attractive possibilities for various nonlinear optical online_orderings.
| Physical and Optical Properties | |
|---|---|
| Crystal Structure | trigonal, space group R3c |
| Cell Parameters | a = b = 12.532?, c = 12.717?, Z = 6 |
| Melting Point | 1095 +/-5 °C; |
| Transition Temperature | 925 +/-5 °C; |
| Optical Homogeneity | △n ≈10-6 /cm |
| Mohs Hardness | 4.5 |
| Density | 3.85 g/cm3 |
| Absorption Coefficient | < 0.1%/cm (at 1064 nm) |
| Hygroscopic Susceptibility | low |
| Resistivity | > 1011 ohm-cm |
| Relative Dielectric Constant | e T 11 / e 0 : 6.7, e T 33 /e 0 : 8.1 Tan d , < 0.001 |
| Thermal Expansion Coefficients(in the range of 25 °C- 900 °C) | a, 4 x 10 -6 /K c, 36 x 10 -6 /K |
| Thermal Conductivity | ^ c, 1.2 W/m/K; ||c, 1.6 W/m/K |
| Phase-matchable SHG range | 205nm-1750nm |
| NLO coefficients | d 11 = 5.8 x d36(KDP) d 11 = 0.05 x d 11 , d 22 < 0.05 x d 11 |
| Electro-Optic Coefficients | g 11 = 2.7 pm/V, g 22 , g 31 < 0.1 g 11 |
| Half-Wave Voltage | 48 KV (at 1064 nm) |
| Damage Threshold at 1.064 mm at 0.532 mm |
5 GW/cm 2 (10 ns); 10 GW/cm 2 (1.3 ns)1 GW/cm 2 (10 ns); 7 GW/cm 2 (250 ps) |
| Transparency Range | 189 - 3500 nm |
| Refractive Indices at 1.0642 mm at 0.5321 mm at 0.2660 mm |
n e = 1.5425, n o = 1.6551 n e = 1.5555, n o = 1.6749 n e = 1.6146, n o = 1.7571 |
| Therm-Optic Coefficients | dn o /dT = - 9.3 x 10 -6/°C; dn e /dT = -16.6 x 10 -6 /°C; |
| Sellmeier Equations: | n o 2 ( l ) = 2.7359+0.01878/(λ2 -0.01822)-0.01354 λ2 n e 2 ( l ) = 2.3753+0.01224/(λ2 -0.01667)-0.01516 λ2 |
Capabilities |
|
| 1)Aperture: | 1x1 ~ 12x12mm |
| 2)Length: | 0.02 ~ 25mm |
| 3)Phase matching angle θ and φ: | Determined by different kinds of homonic generartion. |
| 4)Phase matching type: | Type I or Type II |
| 5)End configuration: | Flat or Brewster or Specified |
Typical Specification and Tolerance |
|
| 1)Angle tolerance: | Δθ < ± 0.5°; Δφ < ± 0.5° |
| 2)Dimension tolerance: | (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm) |
| 3)Flatness: | < λ/8 @ 633nm |
| 4)Scratch/Dig code: | better than 10/5 Scracth/dig per MIL-O-13830A |
| 5)Parallelism: | < 20 arc seconds |
| 6)Perpendicularity: | <5 arc minutes |
| 7)Wavefront distortion: | < λ/8 @ 633nm |
| 8)Clear aperture: | > 90% central area |
| 9)Coating: | Protective Coating or Anti-Reflection |
| Part No. | Size(mm) | q | f | Coating |
| BBO001 | 4x4x7 | 22.8° | 0° | AR/AR@1064&532nm |
| BBO002 | 4x4x7 | 47.6° | 0° | AR/AR@532&266nm |
| BBO003 | 4x4x10 | 22.8° | 0° | AR/AR@1064&532nm |
| BBO004 | 4x4x10 | 47.6° | 0° | AR/AR@532&266nm |
| BBO005 | 5x5x2 | 29.2° | 0° | AR/AR@800&400nm |
| BBO006 | 5x5x1 | 29.2° | 0° | AR/AR@800&400nm |
| BBO007 | 5x5x0.3-0.5 | 29.2° | 0° | AR/AR@800&400nm |
| BBO008 | 5x5x0.1 | 29.2° | 0° | AR/AR@800&400nm |