LBO crystals
Main features
- Broad transparency range from 155 nm to 3200 nm
- Absence of photochromic damage (gray-tracking)
- Highest damage threshold among common nonlinear crystals
- The small walk-off angle at room temperature, no walk-off at NCPM regime
- Wide acceptance angle
- Temperature tunable type I and II non-critical phase-matching
- Super-polished and custom crystals available upon request
Application examples
- Sum-frequency generation of 532 nm and 1064 nm to produce 355 nm UV radiation
- Widely tunable OPOs in NIR range pumped by the second harmonic of Nd-doped lasers
- Efficient second-harmonic generation at 1064 nm without walk-off effect (NCPM, t=149 ˚C)
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- Description
- Properties
- Standard specifications
Lithium Triborate (LiB3O5, LBO) crystals feature a broad transparency range, wide acceptance angle, small walk-off angle, and the highest damage threshold among common nonlinear crystals. Most common applications include high-power near-infrared wavelength second harmonic generation, sum-frequency generation to produce visible, ultraviolet laser light, and visible, near-infrared widely tuned optical parametric oscillators. 4Lasers are capable of providing uncoated super-polished LBO crystals desired, e.g. for high-power UV generation via sum-frequency generation of 1064 nm and 532 nm.
| Physical and optical properties | |
|---|---|
| Chemical formula | LiB3O5 |
| Crystal structure | Orthorhombic, mm2 |
| Lattice parameters | a = 8,46 Å, b = 7,38 Å , c = 12,717 Å |
| Optical symmetry | Negative biaxial (2Vz = 109,2° @0,5321 μm) |
| Density | 2,474 g/cm3 |
| Mohs hardness | 6-7 |
| Transparency range | 155 nm - 3,2 μm @“0“ transmittance level |
| Sellmeier equations @T = 293 K (λ in µm) | nX2 = 2,4542 + 0,01125/(λ2 - 0,01135) - 0,01388 λ2; nY2 = 2,5390 + 0,01277/(λ2 - 0,01189) - 0,01849 λ2 + 4,3025 × 10-5λ4 - 2,9131 × 10-5 λ6; nZ2 = 2,5865 + 0,0131/(λ2 - 0,01223) - 0,01862 λ2 + 4,5778×10-5 λ4 - 3,2526 × 10-5 λ6 |
| Refractive indices | nX= 1,5656; nY= 1,5905; nZ= 1,6055 @1064 nm |
| LBO crystals | |
|---|---|
| Orientation accuracy | <30 arcmin |
| Clear aperture | >90% |
| Face dimensions tolerance | +0,0/-0,1 mm |
| Length tolerance | ±0,1 mm |
| Parallelism error | <20 arcsec |
| Perpendicularity error | <10 arcmin |
| Protective chamfers | <0,1 mm at 45° |
| Surface quality | 10-5 S-D |
| Wavefront distortion | <λ/4@632,8 nm |
| Coatings | AR coatings on both sides |
| Laser-induced damage threshold | >1 GW/cm2@1064 nm, 10 ns |
| Mount | Unmounted |
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Face dimensions
Length
Theta
Phi
Coatings
Application
SKU
PRICE
QUANTITY
3x3 mm
10 mm
42,2°
90°
AR/AR@532+1064/355 nm
THG@1064 nm, type II
7199
230 €
3x3 mm
20mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7202
360 €
3x3 mm
10 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7203
220 €
5x5 mm
10 mm
42,2°
90°
AR/AR@532+1064/355 nm
THG@1064 nm, type II
7204
610 €
5x5 mm
10 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7207
360 €
5x5 mm
20 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7208
850 €
3x3 mm
10 mm
90°
0°
AR/AR@532+1064 nm
NCPM SHG@1064 nm, T=149 ˚C
7209
220 €
3x3 mm
20 mm
90°
0°
AR/AR@532+1064 nm
NCPM SHG@1064 nm, T=149 ˚C
7210
360 €
3x3 mm
20 mm
42,2°
90°
AR/AR@532+1064/355 nm
THG@1064 nm, type II
9457
380 €
6x6 mm
1 mm
90°
13,8°
AR/AR@515+1030 nm
SHG@1030 nm, type I
9458
430 €
5x5 mm
20 mm
42,2°
90°
AR/AR@532+1064/355 nm
THG@1064 nm, type II
9459
900 €
6x6 mm
2 mm
90°
13,8°
AR/AR@515+1030 nm
SHG@1030 nm, type I
9460
400 €
6x6 mm
3 mm
90°
13,8°
AR/AR@515+1030 nm
SHG@1030 nm, type I
9461
450 €
6x6 mm
4 mm
90°
13,8°
AR/AR@515+1030 nm
SHG@1030 nm, type I
9462
500 €
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