Lithium triborate, LBO, is a nonlinear crystal with a stated transparency range of 210–2300 nm. High-power harmonic-generation designs benefit from its damage resistance and options for noncritical phase matching.
Properties, applications and specifications
Lithium triborate (LiB3O5 or LBO) is an excellent nonlinear optical crystal. It has widely recognized for these features:
Wide transparency range (210 nm – 2300 nm)
Moderately nonlinear coupling
High damage threshold
Good chemical and mechanical properties
For type I SHG of 1000 nm – 1200 nm possibility of non critical phase matching
Free of gray track effect therefore very useful in green lasers
LBO has non-critical phase matching conditions (NCFM) for Type I SHG at 1000-1300nm. In this case, LBO is free of walk-off limitations and, therefore, long LBO crystals can be used. LBO crystals are free of the grey track effect and as a result, are very useful in high power green lasers.
Specifications
|
Dimensional Tolerance
|
(W±0.1mm) x (H±0.1mm) x (L+0.2/-0.1 mm) L>2mm
|
|
(W±0.1mm) x (H±0.1mm) x (L±0.1 mm) L<2mm
|
|
|
Absorption
|
<0.002%@1064nm, <0.01%@532nm
|
|
Cutting Angle Tolerance
|
Dq< ±0.2°, Df< ±0.2°
|
|
Wavefront Distortion
|
<λ/8 @632.8 nm
|
|
Chamfer
|
≤ 0.15 mm x 45°
|
|
Perpendicularity
|
< 5 arc min
|
|
Parallelism
|
< 20 arc sec
|
|
Flatness
|
<λ/10 @633 nm
|
|
Scratch/Dig
|
10/5 per MIL-PRF-13830B
|
|
Clear Aperture
|
> Central 90%
|
|
Antireflection Coating
|
R<0.2%@1064nm,R<0.5%@532nm,R<3%@355nm
|
Application: SHG@1064nm,
|
Part No
|
W
|
H
|
L
|
θ
|
φ
|
Coating
|
|
LBO-3312S1
|
3
|
3
|
12
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-3315S1
|
3
|
3
|
15
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-3320S1
|
3
|
3
|
20
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-4412S1
|
4
|
4
|
12
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-4415S1
|
4
|
4
|
15
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-4420S1
|
4
|
4
|
20
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-5512S1
|
5
|
5
|
12
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-5515S1
|
5
|
5
|
15
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-5520S1
|
5
|
5
|
20
|
90
|
11.4
|
AR/AR1064&532nm
|
|
LBO-3312S2
|
3
|
3
|
12
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-3315S2
|
3
|
3
|
15
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-3320S2
|
3
|
3
|
20
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-4412S2
|
4
|
4
|
12
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-4415S2
|
4
|
4
|
15
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-4420S2
|
4
|
4
|
20
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-5512S2
|
5
|
5
|
12
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-5515S2
|
5
|
5
|
15
|
20.9
|
90
|
AR/AR1064&532nm
|
|
LBO-5520S2
|
5
|
5
|
20
|
20.9
|
90
|
AR/AR1064&532nm
|
Application: THG@1064 nm,
|
Part No
|
W
|
H
|
L
|
θ
|
φ
|
Coating
|
|
LBO-3312T1
|
3
|
3
|
12
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-3315T1
|
3
|
3
|
15
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-3320T1
|
3
|
3
|
20
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-4412T1
|
4
|
4
|
12
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-4415T1
|
4
|
4
|
15
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-4420T1
|
4
|
4
|
20
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-5512T1
|
5
|
5
|
12
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-5515T1
|
5
|
5
|
15
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-5520T1
|
5
|
5
|
20
|
90
|
37.2
|
AR/AR1064&532&355nm
|
|
LBO-3312T2
|
3
|
3
|
12
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-3315T2
|
3
|
3
|
15
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-3320T2
|
3
|
3
|
20
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-4412T2
|
4
|
4
|
12
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-4415T2
|
4
|
4
|
15
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-4420T2
|
4
|
4
|
20
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-5512T2
|
5
|
5
|
12
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-5515T2
|
5
|
5
|
15
|
42.9
|
90
|
AR/AR1064&532&355nm
|
|
LBO-5520T2
|
5
|
5
|
20
|
42.9
|
90
|
AR/AR1064&532&355nm
|
