Top KYW Crystal Secrets
Top KYW Crystal Secrets
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In useful phrases, the Yb:KYW crystal has discovered its market in higher-electrical power laser programs as a result of its capability to generate high Electrical power ultrashort laser pulses when retaining a compact dimensions. The interaction of its functions �?seamless ytterbium substitution, potent absorption features, ultrashort pulse generation and performance in Vitality conversion �?positions the Yb:KYW crystal as a cornerstone from the laser technological innovation, masking varied fields starting from scientific investigate to industrial programs.
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Femtosecond laser determined by Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the pulse
FIG. 4. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic element for an output electric power of seven-hundred mW. The width of
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW because of the equivalent measurements of those chemical things nearly a hundred% of Yb-doping could be accomplished. This special characteristic permits ytterbium to take the spot of yttrium with almost no disruption on the crystal’s lattice.
After air drying and subsequent cleansing with a cotton cloth soaked in Alcoholic beverages, the movie surface area confirmed no indications of peeling or scratches.
FIG. one. Optical layout of the laser with direct pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
5 mm besides the middle of your beam caustic. As a way to Examine the mode matching simulation, we executed the experiment with Ng-Reduce crystal oscillator, which was created Earlier As well as in a same issue with simulation [eleven]. As shown in Determine three(b) with red dots and line, the CW output electric power is extremely dependent on the situation of laser crystal and also the experimental end result coincides perfectly with simulation outcome. Being a Take note, multimode Procedure happened in experiment when the dimension on the pump beam is larger sized than TEM00 cavity method and it will cause bigger CW output power within the displacement region below 3.five mm.
... at fifty percent-peak were created within a learn oscillator with selfsynchronization in the axial modes, explained within our before write-up. 21 The new edition from the laser, compared with that described within our before post, applied an Yb:KYW crystal with the N pcut (optical axis N p with the index ellipsoid was parallel to the propagation path on the laser radiation), with the polarization in the produced radiation directed together the N m axis.
... Not just the place of crystal within the cavity but also the amplification axis of crystal has an effect on the laser Procedure tremendously, because the absorption and emission cross sections of your crystal are quite various in accordance with the orientation of the crystal.
Even though ytterbium-doped laser achieve media normally exhibit a small quantum defect, ytterbium-doped tungstates allow for particularly compact values. Such as, a 1030-nm Yb:YAG laser would Commonly be pumped all around 940 nm, whereas Yb:KGW or Yb:KYW could be most successfully pumped close to 981 nm.
Li2WO4-WO3 flux was efficiently utilized minimizing The expansion temperature underneath 900 oC. Based on single crystal x-ray measurements, the crystal corresponds towards the P2/n Area group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is usually a amazing more info content that plays an important purpose in laser technological innovation. Its Major function will be to produce ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Simultaneously, a shorter laser wavelength may be attained; it is feasible to work with a quantum defect properly below 1%. To be a consequence, the heat era can be so tiny this partly compensates the lower thermal conductivity.