Nd: YAG crystals are the most widely used solid-state laser materials. These crystals are characterized by a relatively narrow gain bandwidth, which allows for high gain efficiency and a low laser threshold. Nd: YAG crystals possess excellent thermal and mechanical properties. High optical quality and large diameter Nd: YAG crystals can be obtained using the Czochralski method.
Isotropic crystals (cubic symmetry)
- High thermal conductivity
- Obtain high optical quality and large diameter spots with Czochralski
The low laser threshold and wide absorption band near 808 nm coincide with the emission of the AlGaAs laser diode
- Custom crystals are available upon request
Orientation | [111] |
Extinction ratio | >28 decibel |
Transparent aperture | >90% |
Dimension tolerance | +0/-0, 1mm |
Length tolerance | ±0, 1mm |
Parallelism | <20 arcsec |
Verticality | <10 arcmin |
Guard tank | <0,1 mm at 45˚ |
Surface quality | 10-5 S-D |
Surface flatness | <λ/8@6328 nm |
Wavefront distortion | λ/4@6328 nm |
Coating | Ar(Ravg<0, 15%)@1064 nm HT(T>95%)@808 nm+HR(R>99, 5%)@1064 nm/Ar(R<0, 15%)@1064 nm |
Laser damage threshold | >10 J/cm2@1064 nm, 10 ns |
Continuous wave pulses operate at 1064 nm, 532 nm, 355 nm, 266 nm
Material processing, welding, cutting
Laser medical system.
Absorption peak wavelength | 808 nm |
Peak absorption cross section | 6.7×10-20cm2 |
Peak absorption bandwidth | 2.5 nm |
Laser wavelength | 1064 nm |
Life 4F3/2 nd level | 250μs |
Emission cross section @1064 | 3×10-19 cm2 |
Refractive index @1064 nm | 1.82 |
Crystal structure | Cube |
Density | 4.56g/ cm3 |
Mohs hardness | 8.5 |
Thermal conductivity | ~13 Wm-1K-1 |
DN/DT | 9.86×10-6 K-1 |
Coefficient of thermal expansion | 6.96×10-6 K-1 |
Typical doping level | 1% |
English
русский
