KYW Crystal Secrets
KYW Crystal Secrets
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In simple phrases, the Yb:KYW crystal has located its niche in high-electrical power laser purposes because of its ability to deliver superior energy ultrashort laser pulses whilst maintaining a compact sizing. The interaction of its characteristics �?seamless ytterbium substitution, sturdy absorption characteristics, ultrashort pulse technology and effectiveness in Electrical power conversion �?positions the Yb:KYW crystal as being a cornerstone in the laser engineering, masking various fields ranging from scientific investigate to industrial programs.
This one of a kind characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at very low Total exposure, and drives purposes which include deep-tissue multiphoton microscopy and superior-precision eye surgery
We current a twin-crystal Yb:KGW laserthat iscapable to work for a Q-switched oscillator with output power nearly 24 W and pulse size of 20 ns,or as a regenerative amplifier with output ability approximately 21 W and pulse duration beneath two hundred fs after compression of chirped pulses. Both lasers have superb beam top quality with beam parameter M2
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of a laser with an oblong active ingredient for an output energy of 700 mW. The width of
Ultrafast lasers, with pulse widths of a few picoseconds (10−12 s) or fewer, permit the time resolution expected in laser-energized fluorescence lifetime spectroscopy and imaging techniques.In addition, they supply higher pulse peak powers at superior repetition charges and reasonable ordinary output powers.
Adhesion Examination Compliant with MIL-C-675C navy expectations, an adhesion exam concerned implementing a tape that fulfills LT-90 technical specs onto the lens film layer. The tape was affixed entirely and after that eliminated vertically. This course of action was carried out thrice, resulting in no blistering or peeling.
FIG. 1. Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output
five mm besides the middle in the beam caustic. So as to check the manner matching simulation, we carried out the experiment with Ng-cut crystal oscillator, which was designed Formerly and in a exact same issue with simulation [11]. As shown in Determine three(b) with crimson dots and line, the CW output energy is very dependent on the placement of laser crystal as well as the experimental final result coincides effectively with simulation consequence. For a Be aware, multimode operation transpired in experiment in the event the dimension with the pump beam is greater than TEM00 cavity manner and it will cause higher CW output electric power during the displacement region down below three.five mm.
... at fifty percent-height have been produced within a learn oscillator with selfsynchronization of the axial modes, explained in our earlier post. 21 The new edition of your laser, in contrast to that explained in our previously report, used an Yb:KYW crystal by having an N pcut (optical axis N p in the index ellipsoid was parallel for the propagation direction from the laser radiation), with the polarization of the generated radiation directed along the N m axis.
Nonetheless, after Nd3+:YAG grew to become commercially out there, the fascination in CaWO4 dropped sharply. In later several years, selected other tungstate crystals check here began to appeal to lots of attention.
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This tandem of characteristics has much-reaching implications, notably in the development of compact still powerfull lasers.
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Talk to RP Photonics for just about any tips concerning tungstate lasers, including femtosecond lasers and large-energy lasers.