KYW Crystal Secrets
KYW Crystal Secrets
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We existing a twin-crystal Yb:KGW laserthat iscapable to operate as a Q-switched oscillator with output ability up to 24 W and pulse length of twenty ns,or for a regenerative amplifier with output energy as many as 21 W and pulse length below two hundred fs after compression of chirped pulses. Each lasers have exceptional beam good quality with beam parameter M2
Coloration-coded reflectivity of the Bragg mirror like a function of wavelength and angle on the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing through amplification plus the corresponding lengthening of your amplified pulse when it really is compressed, a mix of two Yb:KYW crystals were used, Together with the spectral maxima from the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
Adhesion Take a look at Compliant with MIL-C-675C military specifications, an adhesion take a look at associated implementing a tape that meets LT-90 specs onto the lens film layer. The tape was affixed entirely and afterwards eradicated vertically. This procedure was performed three times, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical functions owing to the existence of thulium ions, and so the elements may very well be more examined while in the scope of laser and luminescence applications.
5 mm in addition to the center of your beam caustic. As a way to Look at the mode matching simulation, we done the experiment with Ng-cut crystal oscillator, which was formulated previously and in a exact situation with simulation [11]. As shown in Determine 3(b) with crimson dots and line, the CW output power is highly depending on the posture of laser crystal as well as the experimental final result coincides nicely with simulation consequence. As a Take note, multimode Procedure happened in experiment in the event the sizing of the pump beam is greater than TEM00 cavity manner and it brings about bigger CW output power inside the displacement location under 3.5 mm.
For tungstates, the ytterbium doping concentration can be extremely superior without the need of major quenching because the replaced ions have an exceedingly very similar ion radius, as well as the inter-ion length is fairly huge.
... Not only the position of crystal while in the cavity but additionally the amplification axis of crystal has an effect on the laser operation drastically, as the absorption and emission cross sections from the crystal are really distinctive in accordance with the orientation of the crystal.
Though ytterbium-doped laser attain media generally exhibit a little quantum defect, ytterbium-doped tungstates allow for for significantly modest values. As an check here example, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW may be most effectively pumped around 981 nm.
This tandem of characteristics has considerably-reaching implications, specifically in the development of compact still powerfull lasers.
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