Everything about KYW Crystal
Everything about KYW Crystal
Blog Article
The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly substantial when compared with that of Yb:YAG. This permits for large wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values perfectly down below a hundred fs are actually achieved with passive manner locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, is actually a amazing material that plays a vital job in laser technologies. Its Principal functionality is usually to create ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
The Yb:KYW crystal’s proficiency in gentle absorption at about 981 nm would make the crystal compatible for diode pumping. It truly is even further Increased by its extraordinary efficiency in this process, coupled with its reduced quantum defect.
FIG. 4. Autocorrelation purpose of the heart beat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic component for an output energy of 700 mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW a result of the similar sizes of such chemical factors around 100% of Yb-doping may very well be realized. This unique attribute permits ytterbium to go ahead and take location of yttrium with virtually no disruption towards the crystal’s lattice.
Right after air drying and subsequent cleansing with a cotton fabric soaked in Liquor, the movie floor showed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are applied as lasing elements to deliver ultrashort (~ a hundred-two hundred fs) significant electric power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser techniques.
5 mm apart from the center with the beam caustic. As a way to check the method matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was made Formerly As well as in a same issue with simulation [eleven]. As shown in Figure three(b) with red dots and line, the CW output electricity is very dependent on the placement of laser crystal as well as experimental outcome coincides properly with simulation final result. As being a Notice, multimode Procedure happened in experiment when the measurement with the pump beam is larger sized than TEM00 cavity mode and it triggers better CW output ability in the displacement region under three.5 mm.
For tungstates, the ytterbium doping focus can be quite substantial without the need of important quenching because the changed ions have an extremely comparable ion radius, and the inter-ion length is pretty significant.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW due to comparable measurements of these chemical elements as much as a hundred% of Yb-doping may very well be reached.
The thermal conductivity of popular double tungstates is with the get to 3–4 W/(K m) �?which isn't undesirable in contrast with other laser crystals (Even though numerous periods fewer than for YAG), and relatively big in comparison With all the thermal conductivity of normal Eyeglasses.
This tandem of characteristics has significantly-achieving implications, particularly in the construction of compact however powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature had been measured. The emission spectrum and life time in the 3 F 4 excited point out were being identified. Making use of conventional and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes have been calculated and fantastic arrangement While using the experimental results was obtained for both theories.
To make certain we preserve this Site safe, you should can you affirm you are a human by ticking the box beneath. In case you are unable to accomplish the read more above mentioned ask for be sure to contact us using the below link, delivering a screenshot of one's encounter.