Not known Details About KYW Crystal
Not known Details About KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is quite large as opposed with that of Yb:YAG. This enables for huge wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values well beneath a hundred fs are actually achieved with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is actually a extraordinary product that performs an important function in laser technologies. Its Key purpose will be to generate ultrashort pulses of light, spanning only a few hundred femtoseconds.
time. Crystals in the compound melts congruently at 1007 oC, nevertheless soften crystallization of high quality crystal is difficult as a result of section transition at ~920 oC. The best seeded Remedy technique from
FIG. 4. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Lively component for an output electric power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing all through amplification along with the corresponding lengthening in the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were being applied, With all the spectral maxima with the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
The monoclinic crystal constructions results in a normal birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization decline.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are used as lasing components to create ultrashort (~ one hundred-two hundred fs) superior power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser devices.
Tungstates are likely to have higher Raman coefficients (�?Raman scattering). As a result, they could crank out sizeable Raman gain at moderate optical intensities. It is achievable to use the laser crystal itself as being a Raman converter.
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High-energy get more info repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical purposes
Though ytterbium-doped laser acquire media usually show a little quantum defect, ytterbium-doped tungstates enable for specifically tiny values. As an example, a 1030-nm Yb:YAG laser would normally be pumped all over 940 nm, whereas Yb:KGW or Yb:KYW could possibly be most competently pumped close to 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature ended up measured. The emission spectrum and life time on the three File four psyched point out were being decided. Employing standard and modified Judd–Ofelt theories, the depth parameters along with the radiative lifetimes were calculated and excellent agreement with the experimental results was received for both equally theories.
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