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Yb:KGW crystal is an excellent laser gain material and are used as a lasing materials to generate ultrashort high power pulses. Yb:KGW can be used as ultrashort pulses amplifiers too. It is one of the best materials for high power thin disk lasers. Its broad spectral emission band 1023-1060nm allows the generation of ultrashort(80 -200 fs) high power pulses. Its wide absorption spectrum at 981 nm and high absorption of pump radiation allow an efficient use of diode laser pumping.Yb: KGW has the advantage of larger absorption cross section, which decreases the minimum pump intensity necessary to achieve transparency in the quasi-two-level system of ytterbium.
Features:
l High absorption coefficient @ 981 nm
l High stimulated emission cross section
l Low lasing threshold
l Extremely low quantum defect
l Broad output at 1020-1060 nm
l High slope efficiency with diode pumping
(>50%)
Specifications
of Yb:KYW :
Orientation |
[010], Nm axis is parallel to
input/output faces |
Standard Dopant concentration (at.
%) |
1.0% |
Maximum length |
40mm |
Size tolerance, mm |
±0.1 |
Parallelism |
10″ |
Flatness |
λ/10@633nm |
Perpendicularity |
< 10' |
Surface quality |
10/5 (MIL-PRF-13830B) |