KYW Crystal - An Overview
KYW Crystal - An Overview
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly significant in contrast with that of Yb:YAG. This enables for huge wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values nicely under a hundred fs are actually achieved with passive mode locking.
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time. Crystals in the compound melts congruently at 1007 oC, however melt crystallization of top quality crystal is not possible resulting from phase transition at ~920 oC. The very best seeded Option technique from
Coloration-coded reflectivity of the Bragg mirror as being a operate of wavelength and angle with the incident beam.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to identical sizes of these chemical components around one hundred% of Yb-doping can be achieved. This unique attribute permits ytterbium to go ahead and take position of yttrium with pretty much no disruption into the crystal’s lattice.
Just before the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser get medium. It was in truth Employed in the initial repeatedly functioning crystal laser.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are employed as lasing supplies to generate ultrashort (~ a hundred-200 fs) high ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser programs.
five mm other than the center of the beam caustic. In order to check the manner matching simulation, we done the experiment with Ng-Reduce crystal oscillator, which was developed Beforehand and in a same affliction with simulation [11]. As demonstrated in Determine three(b) with red dots and line, the CW output electric power is highly dependent on the position of laser crystal and the experimental end result coincides perfectly with simulation final result. As being a Take note, multimode operation happened in experiment in the event the sizing in the pump beam is bigger than TEM00 cavity method and it will cause larger CW output ability inside the displacement location below 3.5 mm.
For tungstates, the ytterbium doping concentration can be extremely high without considerable quenching since the replaced ions have an exceptionally identical ion radius, and the inter-ion length is pretty significant.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW as a result more info of comparable dimensions of those chemical elements nearly one hundred% of Yb-doping might be realized.
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Li2WO4-WO3 flux was efficiently utilized minimizing The expansion temperature underneath 900 oC. According to solitary crystal x-ray measurements, the crystal corresponds to the P2/n Room group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature ended up calculated. The emission spectrum and life span of the 3 File 4 energized point out were established. Employing regular and modified Judd–Ofelt theories, the intensity parameters as well as the radiative lifetimes had been calculated and superior settlement Using the experimental effects was obtained for equally theories.
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