New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite huge in comparison with that of Yb:YAG. This enables for vast wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values properly under 100 fs have already been realized with passive mode locking.
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Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a very regenerative amplifier by spectral profiling of the pulse
FIG. four. Autocorrelation operate of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active ingredient for an output electrical power of seven-hundred 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 having fiber output. To prevent spectral narrowing throughout amplification plus the corresponding lengthening with the amplified pulse when it is compressed, a combination of two Yb:KYW crystals have been utilized, Together with the spectral maxima from the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
In advance of the development of Nd:YAG, Nd3+:CaWO4 was a very important rare-earth-doped laser acquire medium. It absolutely was in actual fact Employed in the 1st consistently working crystal laser.
PDF Yb:KGW and Yb:KYW crystals have broad get more info emission bandwidths and therefore are employed as lasing resources to make ultrashort (~ one hundred-200 fs) large electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser systems.
A significant brightnessQ-switched oscillator and regenerative amplifier depending on a dual-crystal Yb:KGW laser
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However, as soon as Nd3+:YAG became commercially obtainable, the curiosity in CaWO4 dropped sharply. In later on several years, selected other tungstate crystals began to bring in lots of notice.
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Li2WO4-WO3 flux was effectively applied cutting down The expansion temperature underneath 900 oC. As outlined by one crystal x-ray measurements, the crystal corresponds to the P2/n Place group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature had been calculated. The emission spectrum and lifetime from the three F four excited point out ended up decided. Working with normal and modified Judd–Ofelt theories, the intensity parameters along with the radiative lifetimes had been calculated and very good arrangement Along with the experimental success was obtained for both theories.
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