KYW Crystal No Further a Mystery
KYW Crystal No Further a Mystery
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is rather big in comparison with that of Yb:YAG. This permits for broad wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values well beneath a hundred fs are already obtained with passive manner locking.
This exceptional characteristic of ultrafast pulses enables nonlinear optical conversation with tissue at lower All round publicity, and drives applications which include deep-tissue multiphoton microscopy and significant-precision eye medical procedures
The Yb:KYW crystal’s proficiency in light absorption at close to 981 nm would make the crystal well suited for diode pumping. It really is even further Increased by its extraordinary efficiency in this method, coupled with its small quantum defect.
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active ingredient for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW as a result of related dimensions of such chemical elements as much as 100% of Yb-doping could possibly be reached. This exceptional attribute permits ytterbium to take the area of yttrium with almost no disruption into the crystal’s lattice.
Adhesion Test Compliant with MIL-C-675C armed service specifications, an adhesion check concerned making use of a tape that meets LT-ninety specifications on to the lens film layer. The tape was affixed totally and then eliminated vertically. This technique was performed thrice, causing no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical features owing to the presence of thulium ions, and therefore the resources may be more studied in the scope of laser and luminescence apps.
Spatial composition with the beam along with the corresponding intensity profiles I for the output in the laser.
For tungstates, the ytterbium doping concentration can be very substantial without the need of substantial quenching because the replaced ions have an incredibly very similar ion radius, as well as inter-ion length is pretty significant.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW mainly because of the related sizes of such chemical factors up to one hundred% of Yb-doping could be realized.
The thermal conductivity of frequent double tungstates is of your purchase to three–four W/(K m) �?which is not negative as opposed with other laser crystals (Though numerous periods lower than for YAG), and reasonably significant compared With all the thermal conductivity of regular Eyeglasses.
Li2WO4-WO3 flux was productively used lessening The expansion temperature below 900 oC. In accordance with single crystal x-ray measurements, the crystal corresponds for the P2/n Room team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature have been measured. The emission spectrum and life time with the three File 4 enthusiastic condition ended up decided. Working with typical and modified Judd–Ofelt theories, here the depth parameters and also the radiative lifetimes were calculated and great agreement with the experimental results was attained for equally theories.
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