The KYW Crystal Diaries
The KYW Crystal Diaries
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The comparison with Eyeglasses is appropriate Because the substantial acquire bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals from the compound melts congruently at 1007 oC, nevertheless soften crystallization of top of the range crystal is difficult as a consequence of period changeover at ~920 oC. The best seeded Answer system from
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Optical format of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output of the radiation, WP is actually a 50 percent-wave plate, CL is a collimating lens, FL is actually a concentrating lens, AE is surely an Lively ingredient created from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC will be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C armed service criteria, an adhesion check concerned making use of a tape that satisfies LT-ninety technical specs onto the lens film layer. The tape was affixed totally and after that eradicated vertically. This course of action was done thrice, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical features owing to the existence of thulium ions, and therefore the components can be further studied in the scope of laser and luminescence apps.
Spatial composition of your beam and the corresponding depth profiles I for the output of your laser.
For tungstates, the ytterbium doping concentration can be quite superior without having sizeable quenching as the changed ions have a really similar ion radius, and also the inter-ion distance is pretty substantial.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW as a result of equivalent dimensions of these chemical features around 100% of Yb-doping could possibly be achieved.
The thermal conductivity of frequent double tungstates is of your get to three–4 W/(K m) �?which is not terrible in comparison with other laser crystals (although several times lower than for YAG), and relatively big compared With all the thermal conductivity of common Eyeglasses.
This tandem of attributes has far-achieving implications, significantly in the construction of compact still powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature ended up calculated. The emission spectrum and lifetime with the 3 File 4 psyched state have been decided. Utilizing common and modified Judd–Ofelt theories, the depth parameters as well as radiative lifetimes had been calculated and fantastic agreement Along with the experimental final results was attained for equally theories.
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