Nd: KGW Crystals are ideal for generating picosecond laser pulses. Compared to Nd: YAG crystals, these crystals have a lower stimulated emission cross-section, resulting in better Q-switching performance. Notably, it is possible to use Nd: KGW laser crystals themselves as Raman converters.
Efficient Raman Converter
Self-Protective Features
Suitable for Generating Picosecond Pulses, Ideal for Diode-Pumped Lasers
High Storage Density and Low Laser Threshold
Main Applications of Nd: KGW Crystals:
Diode-Pumped Q-Switched Lasers Emitting in the “Eye-Safe” Spectral Range for Laser Rangefinders
Orientation | B(N)p |
Transparent aperture | >90% |
Dimension tolerance | +0/-0, 1mm |
Length tolerance | ±0, 1mm |
Parallelism | <10 arcsec |
Verticality | <10 arcmin |
Guard tank | <0,1 mm at 45˚ |
Surface quality | 10-5 S-D |
Surface flatness | <λ/8@632.8 nm |
Wavefront distortion | λ/4@6328 nm |
Coating | R<0, 5%@808 nm+R<0, 15%@1067 nm both surfaces |
Laser damage threshold | >10 J/cm2@1067 nm, 10 ns |
Diode-Pumped Q-Switched Lasers Emitting in the “Eye-Safe” Spectral Range for Laser Rangefinders
Raman Converters - Laser medical system.
Absorption peak wavelength | 811 nm |
Peak absorption cross section | 28×10-20cm2 |
Peak absorption bandwidth | 11 nm |
Laser wavelength | 1067 nm |
Life 4F3/2 nd level | 130μs |
Emission cross section @1067 | 21×10-20cm2 |
Refractive index @1067 nm | ng=2.033, np=1.937, nm=1.986 |
Crystal structure | monoclinic |
Density | 7.25g/cm3 |
Mohs hardness | 4-5 |
Thermal conductivity | ~3 Wm-1K-1 |
DN/DT | DNp/dt=-15.7×10-6 K-1, DNm/dt=-11.8×10-6 K-1, DNg/dt=-17.3×10-6 K-1. |
Coefficient of thermal expansion | αp=1.60×10-6 K-1, αm=4×10-6 K-1, αg=8.5×10-6 K-1. |
Typical doping level | 2%-10% |
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