KYW Crystal - An Overview
KYW Crystal - An Overview
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The comparison with Eyeglasses is appropriate Because the huge get bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in light-weight absorption at all over 981 nm would make the crystal like minded for diode pumping. It's further Increased by its amazing efficiency in this process, coupled with its minimal quantum defect.
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong Lively factor for an output ability of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with immediate longitudinal pumping by potent linear arrays of semiconductor injection lasers obtaining fiber output. To prevent spectral narrowing during amplification as well as the corresponding lengthening in the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were made use of, Using the spectral maxima on the amplification shifted relative to one another and with spectral profiling with the amplified radiation.
Right after air drying and subsequent cleaning that has a cotton fabric soaked in Alcoholic beverages, the movie floor confirmed no indications of peeling or scratches.
Raman, luminescence and transmission spectra expose optical functions owing to the presence of thulium ions, and for that reason the supplies may very well be further more studied during the scope of laser and luminescence apps.
five mm other than the middle from the beam caustic. As a way to Look at the mode matching simulation, we carried out the here experiment with Ng-Lower crystal oscillator, which was made Earlier As well as in a exact issue with simulation [11]. As demonstrated in Determine three(b) with pink dots and line, the CW output electric power is highly dependent on the situation of laser crystal and also the experimental end result coincides very well with simulation result. Like a Observe, multimode Procedure happened in experiment when the measurement with the pump beam is greater than TEM00 cavity method and it results in higher CW output electrical power while in the displacement location below 3.5 mm.
... at 50 %-height have been created inside a grasp oscillator with selfsynchronization in the axial modes, described within our previously posting. 21 The new version on the laser, compared with that described within our previously posting, utilized an Yb:KYW crystal by having an N pcut (optical axis N p with the index ellipsoid was parallel into the propagation path with the laser radiation), with the polarization in the produced radiation directed together the N m axis.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW mainly because of the identical measurements of those chemical components as much as a hundred% of Yb-doping could be reached.
Even though ytterbium-doped laser acquire media commonly exhibit a small quantum defect, ytterbium-doped tungstates allow for for specifically compact values. As an example, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, While Yb:KGW or Yb:KYW may be most efficiently pumped close to 981 nm.
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Simultaneously, a shorter laser wavelength could be received; it can be done to work 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.