KYW Crystal Secrets

KYW Crystal Secrets

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The comparison with glasses is acceptable For the reason that huge gain bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.

The Yb:KYW crystal’s proficiency in gentle absorption at all around 981 nm tends to make the crystal compatible for diode pumping. It truly is even further Improved by its exceptional efficiency in this method, coupled with its minimal quantum defect.

Shade-coded reflectivity of a Bragg mirror to be a operate of wavelength and angle from the incident beam.

By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the similar sizes of those chemical features as much as one hundred% of Yb-doping can be realized. This unique characteristic permits ytterbium to take the spot of yttrium with almost no disruption into the crystal’s lattice.

Adhesion Test Compliant with MIL-C-675C military services requirements, an adhesion examination associated making use of a tape that meets LT-90 specifications on to the lens movie layer. The tape was affixed fully and then taken off vertically. This treatment was carried out three times, leading to no blistering or peeling.

PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are employed as lasing elements to create ultrashort (~ 100-two hundred fs) higher electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser programs.

A significant brightnessQ-switched oscillator and regenerative amplifier determined by a twin-crystal Yb:KGW laser

For tungstates, the ytterbium doping focus can be very superior without having significant quenching as the replaced ions have an exceedingly related ion radius, and also the inter-ion length is comparatively large.

By substituting yttrium with ytterbium in the crystal lattice read more of Yb:KYW because of the equivalent sizes of such chemical features nearly one hundred% of Yb-doping may be attained.

Though ytterbium-doped laser attain media generally show a small quantum defect, ytterbium-doped tungstates let for significantly compact values. For example, a 1030-nm Yb:YAG laser would Ordinarily be pumped close to 940 nm, Whilst Yb:KGW or Yb:KYW could possibly be most effectively pumped all-around 981 nm.

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Concurrently, a shorter laser wavelength could be received; it is achievable to function which has a quantum defect nicely down below one%. As a consequence, the warmth technology could be so little that this partly compensates the lessen thermal conductivity.