An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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We existing a dual-crystal Yb:KGW laserthat iscapable to function as being a Q-switched oscillator with output electricity around 24 W and pulse length of twenty ns,or as being a regenerative amplifier with output electric power as many as 21 W and pulse length beneath 200 fs just after compression of chirped pulses. Both of those lasers have outstanding beam quality with beam parameter M2
Shade-coded reflectivity of the Bragg mirror for a function of wavelength and angle in the incident beam.
This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers owning fiber output. To forestall spectral narrowing through amplification along with the corresponding lengthening in the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals have been utilised, with the spectral maxima of the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
After air drying and subsequent cleaning with a cotton cloth soaked in Alcoholic beverages, the film surface area confirmed no indications of peeling or scratches.
FIG. 1. Optical structure of the laser with direct pumping with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
five mm other than the center in the beam caustic. As a way to Examine the mode matching simulation, we done the experiment with Ng-Minimize crystal oscillator, which was created Beforehand and in a same ailment with simulation [11]. As revealed in Figure three(b) with crimson dots and line, the CW output ability is extremely depending on the situation of laser crystal as well as the experimental final result coincides properly with simulation result. For a note, multimode operation transpired in experiment once the dimensions of the pump beam is more substantial than TEM00 cavity manner and it causes larger CW output electric power in the displacement region under 3.5 mm.
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW because of the similar dimensions of those chemical elements nearly one hundred% of Yb-doping can be realized.
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This tandem of attributes has significantly-achieving implications, specifically in the development of compact nonetheless powerfull lasers.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared to its counterpart Yb:KGW, is often a amazing substance that plays an essential role in laser technologies. Its primary purpose is usually to produce ultrashort KYW Crystal pulses of sunshine, spanning only a few hundred femtoseconds.
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