KYW Crystal Options
KYW Crystal Options
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In realistic phrases, the Yb:KYW crystal has uncovered its specialized niche in substantial-ability laser programs as a consequence of its capability to deliver significant Vitality ultrashort laser pulses when preserving a compact sizing. The interplay of its options �?seamless ytterbium substitution, potent absorption features, ultrashort pulse generation and efficiency in energy conversion �?positions the Yb:KYW crystal as a cornerstone while in the laser technology, masking various fields starting from scientific analysis to industrial purposes.
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time. Crystals of your compound melts congruently at 1007 oC, having said that melt crystallization of high quality crystal is impossible as a result of stage transition at ~920 oC. The best seeded Option process from
FIG. four. Autocorrelation function of the pulse 共a兲and spectrum 共b兲of a laser with a rectangular Energetic component for an output energy of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers possessing fiber output. To avoid spectral narrowing in the course of amplification and also the corresponding lengthening in the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals have been used, While using the spectral maxima on the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
The monoclinic crystal buildings ends in a normal birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization decline.
FIG. one. Optical structure of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
5 mm apart from the center of your beam caustic. To be able to Verify the manner matching simulation, we performed the experiment with Ng-Slice crystal oscillator, which was made Beforehand and in a exact same situation with simulation [eleven]. As proven in Determine three(b) with crimson dots and line, the CW output electricity is very dependent on the posture of laser crystal along with the experimental result coincides properly with simulation final result. For a note, multimode Procedure happened in experiment when the sizing on the pump beam is bigger than TEM00 cavity mode and it brings about better CW output energy from the displacement location underneath three.5 here mm.
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By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW as a result of equivalent measurements of such chemical things as many as one hundred% of Yb-doping may very well be attained.
While ytterbium-doped laser gain media commonly exhibit a small quantum defect, ytterbium-doped tungstates permit for specifically small values. By way of example, a 1030-nm Yb:YAG laser would Commonly be pumped all over 940 nm, While Yb:KGW or Yb:KYW may be most proficiently pumped about 981 nm.
This tandem of attributes has significantly-reaching implications, significantly in the construction of compact still powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at space temperature have been measured. The emission spectrum and life time of your three F 4 thrilled point out were established. Making use of normal and modified Judd–Ofelt theories, the intensity parameters plus the radiative lifetimes ended up calculated and fantastic arrangement While using the experimental benefits was obtained for equally theories.
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