KYW Crystal - An Overview
KYW Crystal - An Overview
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The comparison with glasses is acceptable Considering that the massive attain bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing inside a regenerative amplifier by spectral profiling of the heart beat
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to the identical sizes of these chemical factors up to a hundred% of Yb-doping may very well be attained. This exclusive attribute permits ytterbium to take the location of yttrium with practically no disruption towards the crystal’s lattice.
After air drying and subsequent cleansing with a cotton fabric soaked in Liquor, the movie area confirmed no signs of peeling or scratches.
FIG. 1. Optical layout of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
A large brightnessQ-switched oscillator and regenerative amplifier dependant on a dual-crystal Yb:KGW laser
... at 50 percent-top ended up generated inside of a learn oscillator with selfsynchronization of your axial modes, explained in our previously posting. 21 The new version from the laser, unlike that explained inside our before article, utilised an Yb:KYW crystal using an N pcut (optical axis N p of the index ellipsoid was parallel towards the propagation way from the laser radiation), with the polarization of the created radiation directed alongside the N m axis.
Even so, once Nd3+:YAG became commercially obtainable, the curiosity in CaWO4 dropped sharply. In later on yrs, particular other tungstate crystals began to entice loads of notice.
Though ytterbium-doped laser obtain media generally exhibit a little quantum defect, ytterbium-doped tungstates let for especially compact values. One example is, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most competently pumped all around 981 nm.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, is really a outstanding material that performs a significant purpose in laser engineering. Its Major functionality will be to make ultrashort pulses of light, spanning just a few hundred femtoseconds.
Concurrently, a shorter laser wavelength can be obtained; it is feasible to function that has a quantum defect perfectly underneath one%. As being a consequence, the warmth technology might be so smaller that this partly compensates the lessen thermal conductivity.