KYW Crystal - An Overview
KYW Crystal - An Overview
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The comparison with glasses is acceptable Considering that the large attain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in gentle absorption at around 981 nm tends to make the crystal compatible for diode pumping. It's even further enhanced by its extraordinary effectiveness in this method, coupled with its low quantum defect.
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Ultrafast lasers, with pulse widths of a few picoseconds (10−twelve s) or significantly less, permit time resolution needed in laser-thrilled fluorescence lifetime spectroscopy and imaging techniques.Additionally, they supply large pulse peak powers at substantial repetition fees and average regular output powers.
Before the development of Nd:YAG, Nd3+:CaWO4 was a vital unusual-earth-doped laser attain medium. It was the truth is Employed in the very first repeatedly functioning crystal laser.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are used as lasing products to deliver ultrashort (~ a hundred-two hundred fs) substantial power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser units.
5 mm apart from the middle of your beam caustic. So that you can Test the mode matching simulation, we executed the experiment with Ng-Slash crystal oscillator, which was made Earlier and in a exact same ailment with simulation [11]. As proven in Determine 3(b) with red dots and line, the CW output power is extremely dependent on the posture of laser crystal plus the experimental end result coincides well with simulation consequence. As being a Take note, multimode operation transpired in experiment when the dimensions of the pump beam is larger sized than TEM00 cavity manner and it triggers better CW output power inside the displacement area down below three.five mm.
For tungstates, the ytterbium doping concentration can be quite high devoid of significant quenching since the changed ions have a very related ion radius, as well as inter-ion distance is comparatively substantial.
... Don't just the place of crystal within the cavity but in addition the amplification axis of crystal influences the laser operation drastically, since the absorption and emission cross sections on the crystal are rather distinctive in accordance with the orientation on the crystal.
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This tandem of characteristics has considerably-reaching implications, specially in the construction of compact but powerfull lasers.
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