How KYW Crystal can Save You Time, Stress, and Money.
How KYW Crystal can Save You Time, Stress, and Money.
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, can be a extraordinary material that plays an essential part in laser technological innovation. Its Principal operate is usually to make ultrashort pulses of light, spanning just a few hundred femtoseconds.
We present a twin-crystal Yb:KGW laserthat iscapable to work as a Q-switched oscillator with output energy as much as 24 W and pulse length of twenty ns,or to be a regenerative amplifier with output energy as much as 21 W and pulse duration under 200 fs following compression of chirped pulses. Each lasers have excellent beam quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Exhibit robust peaks at 980 nm and 1030 nm, respectively, ensuring effective energy conversion and superior performance in laser methods.
Optical format of the laser with immediate pumping with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output of your radiation, WP is really a fifty percent-wave plate, CL is often a collimating lens, FL is usually a concentrating lens, AE is definitely an active ingredient produced from an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC could be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a purely natural birefringence, assisting to keep away from thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are utilised as lasing components to produce ultrashort (~ a hundred-200 fs) significant electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
five mm besides the middle on the beam caustic. In an effort to Examine the mode matching simulation, we executed the experiment with Ng-Minimize crystal oscillator, which was produced previously As well as in a identical condition with simulation [eleven]. As shown in Determine 3(b) with purple dots KYW Crystal and line, the CW output power is very dependent on the situation of laser crystal as well as the experimental result coincides perfectly with simulation outcome. To be a Be aware, multimode Procedure happened in experiment once the dimensions of the pump beam is bigger than TEM00 cavity method and it results in greater CW output electricity during the displacement region down below 3.5 mm.
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... Not merely the situation of crystal from the cavity but also the amplification axis of crystal affects the laser Procedure enormously, as the absorption and emission cross sections with the crystal are rather diverse based on the orientation from the crystal.
Although ytterbium-doped laser achieve media commonly show a small quantum defect, ytterbium-doped tungstates let for notably smaller values. One example is, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most proficiently pumped close to 981 nm.
Li2WO4-WO3 flux was effectively utilized cutting down The expansion temperature beneath 900 oC. In line with one crystal x-ray measurements, the crystal corresponds into the P2/n House team.
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