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Research price and patented price for production line are available
Lithium Triborate LiB3O5 or LBO is a newly developed nonlinear optical crystal. It is unique in many aspects, especially
its wide transparency range, moderately high nonlinear coupling, high damage threshold and good
chemical and mechanical properties. Its transmission range is from 0.21 µm to 2.3
µm. LBO allows temperature-controllable non-critical phase-matching (NCPM) for 1.0-1.3
µm, Type I SHG, and also provides room temperature NCPM for Type II SHG at 0.8-1.1
µm. It possesses a relatively large angular acceptance bandwidth, reducing the beam quality
requirements for source lasers.
Features:
-
Broad transparency range from 160nm to
2600nm
-
High optical homogeneity (dn»10-6/cm) and being free
of inclusion
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Relatively large effective SHG coefficient (about three
times that of KDP)
-
High damage threshold (18.9
GW/cm2 for a 1.3ns
laser at 1053nm)
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Wide acceptance angle and small walk-off
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Type I and Type II non-critical phase matching
(NCPM) in a wide wavelength range
-
Spectral NCPM near 1300nm
Application:
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Optical parametric
amplifiers(OPA) and oscillators(OPO);
-
Frequency
doubling(SHG) and tripling(THG)
-
Diode laser pumped Nd:YAG and
Nd: YLF laser. Alexandrite, Ti:Sapphire, Dye Lasers, Ultrashort Pulse Lasers
Main Specification:
| Angle tolerance: |
Δθ< ± 0.5°;
Δφ< ±0.5° |
| Dimension
tolerance: |
(W ± 0.1mm) x (H
± 0.1mm) x (L + 0.2mm/-0.1mm) |
| Flatness: |
λ/8 @
633nm |
| Scratch/Dig
code: |
10/5 Scracth/dig
per MIL-O-13830A |
| Parallelism: |
better than 10
arc seconds |
| Perpendicularity: |
5 arc
minutes |
| Wavefront
distortion: |
less than λ/8 @
633nm |
| Clear
aperture: |
> 90% central
area |
| Working temperature: |
25°C |
| Coating: |
AR/AR: 1064nm / 532nm R1064<0.1%
R532<0.2%
AR/AR:
532nm / 266nm R532<0.2%
R266<0.5%
AR/AR:
1064nm / 355nm R1064<0.2%
R355<0.5% |
Note:
To inquire or order a
finished LBO crystals, please provide detailed specifications as listed in the above. We require engineering drawing for
specific orientation.
For special applications, please consult us for the
designs if you are sure about the phase matching angle .
Please refer to "How to order a
nonlinear crystal" for details.
Physical and Chemical Properties:
| Crystal
structure |
Orthorhombic, Space group Pna21, Point group mm2 |
| Melting
point |
834°C |
| Lattice parameters |
a=8.4473Å,
b=7.3788Å
, c=5.1395Å
, Z=2 |
| Hardness |
~6 Mohs |
| Density |
2.474 g/cm3 |
| Thermal expansion coefficient |
ax=10.8x10-5/K,
ay= -8.6x10-5/K, az=3.4x10-5/K
|
| Absorption coefficient |
<0.1%/cm at 1064nm
|
Optical Properties:
| Transparency range |
160
- 2600 nm
LBO Transparency Curve(thickness =
10mm)
|
| Refractive indices |
| Wavelength |
nx |
ny |
ne |
| 1064
nm |
1.5656 |
1.5905 |
1.6055 |
| 532
nm |
1.5785 |
1.6065 |
1.6212 |
| 355
nm |
1.5973 |
1.6286 |
1.6444 |
|
| Absorption
coefficients |
a < 1%/cm @1.064mm and
0.532mm |
| Phase matching
range |
0.984 - 3.4
mm |
| Therm-optic
coefficients |
dno/dT
= - 9.3 x 10-6/°C
dne/dT = -13.6 x 10-6/°C
dne/dT = (-6.3+2.1λ)
x 10-6/°C |
| Sellmeier
equations |
| N2x= |
2.454140+0.011249/(λ2-0.011350)-0.014591λ2 - 6.60 x
10-5/λ4 ( λ in µm, T=200°C) |
| N |
2.539070+0.012711/(λ2-0.012523)-0.018540λ2 + 2.00 x
10-4/λ4 ( λ in µm,
T=200°C)
|
| N |
2.586179+0.013099/(λ2-0.011893)-0.017968λ2 - 2.26 x
10-4/λ4 ( λ in µm,
T=200°C)
|
|
| Conversion
efficient |
|
pulse |
cw ( for Nd:YAG lasers) |
| SHG |
70% |
30% |
| THG |
60% |
|
|
| Laser Damage Threshold |
18 GW/cm2 for a TEM00 mode, 1.3ns, 1Hz laser at 1064nm;
1GW/cm2 for a cw, mode-locked laser at 1064nm. |
| Nonlinear coefficients |
d31 = 1.05 ± 0.09 pm/V
d32 = -0.98 ± 0.09 pm/V
d33=
0.05 ± 0.006 pm/V |
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