Laser Crystals

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Product Catalog 2015



Laser optics direct from stock. All products are inspected at metrology laboratory, certified and delivered worldwide direct from European Union.

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Yb:KGW and Yb:KYW Crystals

Yb:KGW and Yb:KYW Crystals
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Material Yb:KGW/Yb:KYW
Doping concentration 0.5 – 5.0 atm. % for Yb:KGW
0.5 – 10.0 atm. % for Yb:KYW
Orientation b-cut: Nm-axis is parallel to input/ output faces.
Other orientations available.
Dimensional tolerances +0/-0.05 mm
Length tolerance ±0.1 mm
Surface quality 10-5 S-D
Surface flatness <λ/10 @ 632.8 nm
Parallelism error <10 arcsec
Perpendicularity <10 arcmin
Protective chamfers <0.1 mm x 45°
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Yb:KGW and Yb:KYW crystals are used as lasing materials to generate ultrashort high power pulses. Yb:KGW can be used as ultrashort pulses amplifiers and these crystals are one of the best materials for high power thin disk lasers.

The broad spectral emission band of Yb:KYW allows the tuning of the laser radiation over 1020-1060 nm range and the generation of femtosecond pulses shorter than 70 fs. Enhanced storage capacity, wide absorption spectrum at 980 nm and high absorption of pump radiation in a small crystal region allow an efficient use of diode laser pump.

As compared to YAG or glasses used as hosts for Yb3+, KYW and KGdW have the advantage of a larger absorption cross section than YAG, which decreases the minimum pump intensity necessary to achieve transparency in the quasi-two-level system of ytterbium.
varna High absorption coefficient @ 980 nm
varna High stimulated emission cross section
varna Low laser threshold
varna Extremely low quantum defect
varna Broad output at 1020-1060 nm