New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, is really a exceptional content that plays a vital purpose in laser technological know-how. Its Principal operate would be to make ultrashort pulses of light, spanning only a few hundred femtoseconds.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a very regenerative amplifier by spectral profiling of the pulse
The absorption and emission spectra of Yb:KYW Crystals Show robust peaks at 980 nm and 1030 nm, respectively, guaranteeing successful Electrical power conversion and high efficiency in laser techniques.
Optical structure of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output from the radiation, WP can be a 50 percent-wave plate, CL is often a collimating lens, FL is a concentrating lens, AE is an Energetic ingredient created from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC is the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a natural birefringence, assisting to prevent thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are made use of as lasing products to crank out ultrashort (~ one hundred-two hundred fs) significant electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
5 mm aside from the center of the beam caustic. In order to check the manner matching simulation, we carried out the experiment with Ng-Reduce crystal oscillator, which was developed Beforehand As well as in a identical condition with simulation [eleven]. As proven in Determine 3(b) with pink dots and line, the check here CW output electricity is highly depending on the position of laser crystal as well as experimental end result coincides very well with simulation outcome. To be a Notice, multimode Procedure occurred in experiment once the size on the pump beam is larger than TEM00 cavity method and it will cause greater CW output electricity during the displacement region beneath 3.5 mm.
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By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW due to related sizes of such chemical things approximately 100% of Yb-doping could be realized.
Whilst ytterbium-doped laser attain media generally exhibit a little quantum defect, ytterbium-doped tungstates allow for specifically tiny values. By way of example, a 1030-nm Yb:YAG laser would Commonly be pumped all over 940 nm, While Yb:KGW or Yb:KYW could possibly be most proficiently pumped about 981 nm.
Li2WO4-WO3 flux was properly applied lowering The expansion temperature down below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds into the P2/n space group.
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