Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is quite massive in contrast with that of Yb:YAG. This allows for wide wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values effectively down below a hundred fs are actually obtained with passive manner locking.
The comparison with Eyeglasses is suitable For the reason that massive obtain bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the heart beat
FIG. four. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of the laser with an oblong Energetic ingredient for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW due to identical sizes of these chemical components around one hundred% of Yb-doping may be reached. This exclusive characteristic permits ytterbium to take the location of yttrium with practically no disruption towards the crystal’s lattice.
Just after air drying and subsequent cleaning which has a cotton cloth soaked in Liquor, the movie surface confirmed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are applied as lasing elements to create ultrashort (~ 100-two hundred fs) high ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser units.
A superior brightnessQ-switched oscillator and regenerative amplifier based on a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be extremely large without the need of important quenching since the changed ions have an incredibly comparable ion radius, plus the inter-ion length is comparatively significant.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW as a result of comparable dimensions of such chemical factors as much as a hundred% of Yb-doping may be accomplished.
The thermal conductivity of common double tungstates is in the get to 3–four W/(K m) �?which isn't negative as opposed with other laser crystals (Despite the fact that quite a few instances less than for YAG), and reasonably large in comparison While using the thermal conductivity of common glasses.
This tandem of characteristics has much-achieving implications, particularly in the construction of compact nonetheless powerfull lasers.
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