Nd:YAG crystals
Main features
- Isotropic crystal (cubic symmetry)
- High thermal conductivity
- High optical quality and large diameter boules grown by Czochralski growth method
- Low lasing threshold and wide absorption band at near 808 nm that coincides with the emission of AlGaAs laser diodes
- Custom crystals available upon request
Application examples
- CW and pulsed operation at 1064 nm, 532 nm, 355 nm, 266 nm
- Material processing, welding, cutting
- Laser systems for medical applications
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- Description
- Properties
- Absorption and emission curves
- Standard specifications
Nd3+:YAG crystal is the most widely used solid-state laser material. These crystals are characterized by relatively small gain bandwidth, which allows achieving a high gain efficiency and a relatively low lasing threshold.
Nd:YAG crystals feature excellent thermal and mechanical properties. Nd:YAG of high optical quality and large diameter can be grown.
| Spectroscopic and thermo-mechanical properties | |
|---|---|
| Absorption peak wavelength | 808 nm |
| Absorption cross-section at peak | 6,7 × 10-20 cm2 |
| Absorption bandwidth at a peak wavelength | 2,5 nm |
| Laser wavelength | 1064 nm |
| Lifetime of 4F3/2 neodymium energy level | 250 μs |
| Emission cross-section @1064 | 3 × 10-19 cm2 |
| Refractive index @1064 nm | 1,82 |
| Crystal structure | Cubic |
| Density | 4,56 g/cm3 |
| Mohs hardness | 8,5 |
| Thermal conductivity | ~13 Wm-1K-1 |
| dn/dT | 9,86 × 10-6 K-1 |
| Thermal expansion coefficient | 6,96 × 10-6 K-1 |
| Typical doping level | 0,6 - 1,3 at. % |
| Nd:YAG crystals | |
|---|---|
| Orientation | [111] |
| Extinction ratio | >28 dB |
| 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 |
| Surface flatness | <λ/8@632,8 nm |
| Wavefront distortion | λ/4@632,8 nm |
| Coatings | AR(R<0,15%)@1064 nm on both sides or HT(T>95%)@808 nm + HR(R>99,5%)@1064 nm/AR(R<0,15%)@1064 nm |
| Laser-induced damage threshold | >10 J/cm2@1064 nm, 10 ns |
| Mount | Unmounted |
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Face dimensions
Length
End faces
Doping
Coatings
SKU
PRICE
QUANTITY
⌀3 mm
50 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7071
360 €
⌀3 mm
100 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7072
490 €
⌀3 mm
10 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7073
260 €
⌀3 mm
50 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7074
360 €
⌀3 mm
100 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7075
490 €
⌀5 mm
10 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7076
280 €
⌀5 mm
50 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7077
390 €
⌀5 mm
100 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7078
590 €
⌀5 mm
10 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7079
280 €
⌀5 mm
50 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7080
390 €
⌀5 mm
100 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7081
590 €
3x3 mm
2 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7082
220 €
3x3 mm
3 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7083
220 €
3x3 mm
5 mm
Right-angle cut
1,1%
AR/AR@1064 nm
7084
220 €
3x3 mm
2 mm
Right-angle cut
1,1%
HR@1064 nm+HT@808 nm/AR@1064 nm
7085
240 €
3x3 mm
3 mm
Right-angle cut
1,1%
HR@1064 nm+HT@808 nm/AR@1064 nm
7086
240 €
3x3 mm
5 mm
Right-angle cut
1,1%
HR@1064 nm+HT@808 nm/AR@1064 nm
7087
240 €
⌀3 mm
10 mm
Right-angle cut
0,8%
AR/AR@1064 nm
7106
260 €
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