New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The comparison with Eyeglasses is appropriate Because the big achieve bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in light absorption at all-around 981 nm tends to make the crystal well suited for diode pumping. It is actually further more enhanced by its outstanding performance in this method, coupled with its minimal quantum defect.
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This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers obtaining fiber output. To prevent spectral narrowing all through amplification as well as the corresponding lengthening in the amplified pulse when it is compressed, a mix of two Yb:KYW crystals were utilised, Using the spectral maxima with the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
After air drying and subsequent cleaning that has a cotton cloth soaked in Liquor, the movie area confirmed no signs of peeling or scratches.
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Tungstates tend to have substantial Raman coefficients (�?Raman scattering). As a result, they might deliver substantial Raman acquire at moderate optical intensities. It is achievable to use the laser crystal itself like a Raman converter.
For tungstates, the ytterbium doping concentration can be very high with no considerable quenching as the changed ions have an incredibly equivalent ion radius, plus the inter-ion distance is fairly big.
... Not simply the place of crystal in the cavity but also the amplification axis of crystal influences the laser Procedure tremendously, as the absorption and emission here cross sections with the crystal are quite unique based on the orientation in the crystal.
The thermal conductivity of prevalent double tungstates is on the purchase to three–4 W/(K m) �?which isn't bad compared with other laser crystals (Even though various moments a lot less than for YAG), and pretty significant compared with the thermal conductivity of normal Eyeglasses.
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