Nd KGW laser crystal for oscillation, Q-switch, and mode-locked operation
Description
Yb: KGW is one of the most promising laser active materials. The simple two-level electronic structure of Yb ion avoids unnecessary loss processes such as up conversion, excited state absorption and concentration quenching. Compared with the commonly used Nd: YAG crystal, Yb: KGW crystal has larger absorption bandwidth, the emission lifetime in similar media is 3 to 4 times that of Nd: YAG crystal, larger storage capacity and lower quantum defects. It is more suitable for diode pumping than the traditional Nd doped system. The smaller the Stokes displacement, the less the heating, and the higher the laser efficiency. Compared with other ytterbium doped laser crystals such as Yb: YAG and Yb:YCOB, Yb: KGW has higher absorption cross section (13-17 times), lower quantum defects (~ 4%), higher emission cross section than Yb:YCOB, wider emission band than Yb: YAG, high nonlinear refractive index and the highest slope efficiency (87%). With these performance advantages, Yb: KGW crystal is expected to replace Nd: YAG and Yb: YAG crystal in high-power diode pumped laser system. Yb: KGW also has great prospects in the manufacture of high-power, short pulse duration femtosecond lasers and their wide applications.
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Nd KGW laser crystal for oscillation, Q-switch, and mode-locked operation
Specifications |
|
|---|---|
| Type Of Crystal: | Nd:KGW |
| Crystal Diameter: | 3*3~9*9 mm |
| Crystal Length: | 3~70 mm |
| AR Coating: | One side, Both sides, Uncoated |
| Nd Concentration: | 2.2%(cw),3%(quasi-cw) |
| Fluorescence Lifetime: | 130 μs |
| Stimulated Emission Cross Section : | 3.7*10-19 cm2 |
| Transition Wavelength: | 1067 nm |
| Dn/dT: | 0.4*10-6 K-1 |
| Density (g*cm-3): | 7.248 |
| Specific Heat Cp: | 500 Jkg-1K-1 |
| Laser Wavelength (nm): | 1067 |
| Emission Cross Section (pm2)a: | 32.3 |
| Gain Bandwidth (nm): | 2.73 |
| Fluorescence Lifetime (μs): | 110 at 3% doping |
| Thermal Conductivity (Wm-1K-1): | ~3 |
Features
High doping concentration
Highly excited cross section
High Raman gain coefficient
Good coupling with LD
Wide absorption bandwidth
Low lasing threshold
Applications
1067nm:
Nd:KGW is one of the most effective active media for solid-state laser engineering in the near-infrared region. Nd:KGW has some exceptional properties compared with other widely used Nd-doped laser crystals operating around 1 μm, such as Nd:YAG and Nd:YVO. High doping concentration of Nd ion and high slope efficiency can be achieved with it. This crystal is well known for its high emission cross section (higher than that of Nd:YAG) and thus efficient continuous wave (CW), Q-switched, and mode-locked operation .Inaddition, birefringence of the host results in strongly polarized emission, which is advantageous for further frequency conversion. Because of the high third-order nonlinearity of the host, Nd:KGW crystals and lasers are widely used to generate multiple wavelengths via stimulated Raman scattering.
Q-switched solid state laser
Self-raman solid laser
Mode-locked laser
Multiwatt continuous wave Nd:KGW laser with hot-band diode pumping
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2021
Frequently Asked Questions
Yb: KGW crystal has a larger absorption bandwidth, longer emission lifetime, larger storage capacity, lower quantum defects, and higher laser efficiency compared to Nd: YAG crystal.
Yb: KGW crystal has a higher absorption cross section, lower quantum defects, wider emission band, high nonlinear refractive index, and the highest slope efficiency compared to other ytterbium doped laser crystals such as Yb: YAG and Yb:YCOB.
Nd: KGW crystal is used in solid-state laser engineering in the near-infrared region for applications such as Q-switched solid state lasers, self-raman solid lasers, mode-locked lasers, and multiwatt continuous wave Nd: KGW lasers with hot-band diode pumping.
The absorption band of Nd: KGW crystal is at 808 nm, which effectively couples with LD pump source (emitting wavelength is 808 nm) to improve its luminous efficiency.
Yes, Nd: KGW crystal can realize Raman conversion and become a multi-wavelength light source in the visible band after frequency doubling.