KYW Crystal Things To Know Before You Buy
KYW Crystal Things To Know Before You Buy
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is really a exceptional materials that performs a vital job in laser know-how. Its Major function will be to create ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at about 981 nm will make the crystal well suited for diode pumping. It is additional Improved by its outstanding performance in this process, coupled with its lower quantum defect.
FIG. four. Autocorrelation operate of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active ingredient for an output power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers getting fiber output. To circumvent spectral narrowing for the duration of amplification and also the corresponding lengthening of your amplified pulse when it really is compressed, a mix of two Yb:KYW crystals had been made use of, While using the spectral maxima from the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
After air drying and subsequent cleaning which has a cotton cloth soaked in Liquor, the movie surface showed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are made use of as lasing supplies to create ultrashort (~ one hundred-two hundred fs) high power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser programs.
5 mm besides the middle in the beam caustic. So that you can Check out the mode matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was created Earlier and in a exact same ailment with simulation [11]. As demonstrated in Determine 3(b) with crimson dots and line, the CW output electric power is very dependent on the placement of laser crystal as well as the experimental end result coincides well with simulation result. For a Notice, multimode operation transpired in experiment once the size of your pump beam is larger than TEM00 cavity manner and it triggers increased CW output electricity inside the displacement location beneath 3.5 mm.
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By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW a result of the equivalent sizes of such chemical things as many as one hundred% of Yb-doping might be achieved.
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Concurrently, a shorter laser wavelength is usually obtained; it is feasible to operate having a quantum defect properly underneath one%. To be a consequence, the heat generation may be so tiny that this partly compensates the decrease thermal conductivity.