Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is very large as opposed with that of Yb:YAG. This permits for large wavelength tunability and for Substantially shorter pulse durations from mode-locked lasers. Values nicely beneath 100 fs happen to be accomplished with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is usually a extraordinary content that plays an important job in laser engineering. Its primary purpose should be to generate ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
We existing a dual-crystal Yb:KGW laserthat iscapable to work to be a Q-switched oscillator with output power as many as 24 W and pulse size of twenty ns,or as being a regenerative amplifier with output energy approximately 21 W and pulse length under 200 fs just after compression of chirped pulses. Equally lasers have excellent beam high-quality with beam parameter M2
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Optical structure of a laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output of your radiation, WP is actually a 50 %-wave plate, CL can be a collimating lens, FL is usually a focusing lens, AE is an Energetic component produced from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC would be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C army expectations, an adhesion exam associated applying a tape that meets LT-90 requirements on to the lens movie layer. The tape was affixed totally then taken off vertically. This procedure was carried out three times, leading to no blistering or peeling.
FIG. one. Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial framework with the beam plus the corresponding depth profiles I with the output on the laser.
... at 50 %-height were created inside a master oscillator with selfsynchronization of the axial modes, described in our earlier write-up. 21 The new edition on the laser, contrary to that described within our before article, utilized an Yb:KYW crystal by having an N pcut (optical axis N p from the index ellipsoid was parallel into the propagation direction from the laser radiation), Along with the polarization with the generated radiation directed alongside the N m axis.
However, when Nd3+:YAG turned commercially obtainable, the interest in CaWO4 dropped sharply. In afterwards years, selected other tungstate crystals started to attract plenty of consideration.
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Li2WO4-WO3 flux was productively applied minimizing The expansion temperature beneath 900 oC. As outlined by one crystal x-ray measurements, the crystal corresponds to your P2/n Place group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature had been measured. The emission spectrum and lifetime of your three File 4 fired up state have been decided. Utilizing typical and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes had been calculated and superior settlement Together with the experimental final results was attained for both equally theories.
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