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Arminas Butkus +370 5 219 4884
LBO crystals
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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)
Request custom View stock
  • 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
Order your item
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
380 €
3x3 mm
10 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7203
230 €
5x5 mm
10 mm
42,2°
90°
AR/AR@532+1064/355 nm
THG@1064 nm, type II
7204
600 €
5x5 mm
10 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7207
600 €
5x5 mm
20 mm
90°
11,6°
AR/AR@532+1064 nm
SHG@1064 nm, type I
7208
850 €
3x3 mm
10 mm
90°
AR/AR@532+1064 nm
NCPM SHG@1064 nm, T=149 ˚C
7209
230 €
3x3 mm
20 mm
90°
AR/AR@532+1064 nm
NCPM SHG@1064 nm, T=149 ˚C
7210
380 €
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
850 €
6x6 mm
2 mm
90°
13,8°
AR/AR@515+1030 nm
SHG@1030 nm, type I
9460
420 €
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 €