Yb:KGW crystal is an excellent laser gain material with important advantages among the widely used Nd3+ doped materials. Its spectral emission width of 1023-1060 nm can generate short laser pulses.
We offer:
♦ Various shapes (slabs, bars, cubes)
♦ Different dopant levels
♦ Variety of coatings
♦ Attractive entry-volume pricing for OEMs
Main features:
♦ Greater absorption bandwidth
♦ 3-4 times longer launch life
♦ Higher storage capacity
♦ Lower quantum defects
♦ More suitable for diode pumping
♦ No excited state absorption and up-conversion with high light conversion efficiency
Typical applications:
♦ 1000 nm for biological imaging with high-resolution multiphoton excited fluorescence and third- and second-harmonic microscopy
♦ Applications in Nonlinear Microscopy
♦ Generate ultra-short high-power pulses
♦ Regenerative amplifier
Absorption and emission curves of Yb:KGW
Technical Parameters
Argument Name | Values and Ranges |
Directional | [010] |
Length tolerance | +1.0/-0.0 |
Dimension tolerance | +/-0.1 |
Finish | 20/10 |
Parallelism | < 30 acr sec |
Perpendicularity | < 15 arc min |
Doping concentration | 5% |
Coating | AR-coated |
Quality warranty period | 1 year (with normal use) |
Crystal Structure and Physical Properties
Argument name | Values and Ranges |
Crystal structure | Monoclinic |
Point groups | C2/c |
Lattice constant | a = 8.09 Å；b = 10.43 Å；c = 7.588 Å；β=94.4° |
Refractive index of 1067 nm | ng=2.033；np=2.037；nm=1.986 |
Mohs hardness | 5 |
Density | 7.27 g/cm3 |
Melting point | 1075°C |
Thermal conductivity（@373K，W/cm/K） | K[100] = 0.026 ； K[010] = 0.038 ； K[001] = 0.034 |
Coefficient of thermal expansion @373K | α[100] = 4 × 10-6 K-1 ； α[010] = 1.6 × 10-6 K-1 ； α[001] = 8.5 × 10-6 K-1 |
Shock wavelength | 1023 - 1060 nm |
Absorption band | 981 nm（FWHM 3.7 nm） |
Fluorescence lifetime | 600 μs (5% doping) |
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