An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a extraordinary materials that performs a significant job in laser technologies. Its Main function would be to generate ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at all around 981 nm can make the crystal compatible for diode pumping. It is even more Increased by its amazing performance in this method, coupled with its lower quantum defect.
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This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing during amplification as well as corresponding lengthening with the amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals were applied, Together with the spectral maxima from the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser gain medium. It was in actual fact Employed in the main continuously working crystal laser.
FIG. one. Optical format of the laser with direct pumping with the radiation of semiconductor injection lasers. LD check here can be an IPG Photonics laser diode with fiber output
five mm besides the middle in the beam caustic. As a way to Verify the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was produced previously As well as in a identical condition with simulation [eleven]. As demonstrated in Figure three(b) with pink dots and line, the CW output ability is extremely depending on the placement of laser crystal and also the experimental consequence coincides effectively with simulation final result. Like a note, multimode operation transpired in experiment in the event the measurement of your pump beam is greater than TEM00 cavity manner and it leads to better CW output power inside the displacement location underneath three.five mm.
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... Not only the posture of crystal in the cavity but also the amplification axis of crystal impacts the laser operation drastically, since the absorption and emission cross sections from the crystal are fairly various in accordance with the orientation with the crystal.
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Li2WO4-WO3 flux was properly used lowering The expansion temperature down below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds to your P2/n space group.
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