The KYW Crystal Diaries
The KYW Crystal Diaries
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In sensible phrases, the Yb:KYW crystal has observed its specialized niche in large-ability laser programs because of its power to generate substantial Electrical power ultrashort laser pulses when sustaining a compact dimension. The interplay of its capabilities �?seamless ytterbium substitution, sturdy absorption traits, ultrashort pulse generation and efficiency in Power conversion �?positions the Yb:KYW crystal to be a cornerstone while in the laser technological know-how, masking diverse fields starting from scientific research to industrial applications.
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time. Crystals of your compound melts congruently at 1007 oC, nonetheless soften crystallization of high quality crystal is extremely hard due to period changeover at ~920 oC. The top seeded Remedy system from
The absorption and emission spectra of Yb:KYW Crystals Exhibit sturdy peaks at 980 nm and 1030 nm, respectively, making certain economical Electrical power conversion and significant effectiveness in laser programs.
Ultrafast lasers, with pulse widths of a few picoseconds (ten−12 s) or less, empower some time resolution necessary in laser-energized fluorescence lifetime spectroscopy and imaging approaches.Furthermore, they supply higher pulse peak powers at large repetition rates and reasonable ordinary output powers.
Right after air drying and subsequent cleaning which has a cotton cloth soaked in Alcoholic beverages, the film surface showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are utilized as lasing products to create ultrashort (~ a hundred-200 fs) significant electrical power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser techniques.
5 mm besides the center of your beam caustic. So as to Verify the manner matching simulation, we performed the experiment with Ng-Slice crystal oscillator, which was created previously As well as in a same issue with simulation [eleven]. As shown in Figure three(b) with pink dots and line, the CW output electrical power is extremely depending on the position of laser crystal as well as experimental outcome coincides properly with simulation final result. As a note, multimode operation occurred in experiment when the dimension of the pump beam is greater than TEM00 cavity method and it will cause better CW output ability during the displacement location underneath three.5 mm.
... at 50 %-height were being produced in a grasp oscillator with selfsynchronization of the axial modes, described inside our earlier short article. 21 The new version from the laser, contrary to that explained in our previously post, applied an Yb:KYW crystal with an read more N pcut (optical axis N p on the index ellipsoid was parallel to your propagation direction in the laser radiation), Along with the polarization on the created radiation directed along the N m axis.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW mainly because of the related sizes of those chemical features approximately a hundred% of Yb-doping could possibly be achieved.
Though ytterbium-doped laser attain media frequently show a small quantum defect, ytterbium-doped tungstates allow for particularly compact values. For example, a 1030-nm Yb:YAG laser would Ordinarily be pumped all over 940 nm, whereas Yb:KGW or Yb:KYW may be most proficiently pumped around 981 nm.
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At the same time, a shorter laser wavelength might be acquired; it is feasible to work which has a quantum defect well below 1%. Being a consequence, the warmth era is often so modest that this partly compensates the reduced thermal conductivity.