Yb:KGW and Yb:KYW Crystals
|Doping concentration||0.5 - 5 atm. % for Yb:KGW
0.5 - 10 atm. % for Yb:KYW
|Orientation||b-cut: Nm-axis is parallel to input/ output faces.
Other orientations also available.
|Perpendicularity||≤ 10 arcmin|
|Parallelism error||≤ 10 arcsec|
|Chamfer||< 0.1 mm @ 45 deg|
|Surface Quality||10 - 5 scratch & dig|
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.
|High absorption coefficient @ 980 nm|
|High stimulated emission cross section|
|Low laser threshold|
|Extremely low quantum defect|
|Broad output at 1020-1060 nm|
|High slope efficiency with diode pumping (>55%)|
|High Yb-doping concentration|
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Choose from 15 Yb:KGW and Yb:KYW Crystals