An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The comparison with Eyeglasses is suitable Because the significant get bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in mild absorption at all around 981 nm can make the crystal well suited for diode pumping. It can be additional Increased by its impressive effectiveness in this process, coupled with its very low quantum defect.
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This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers obtaining fiber output. To avoid spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals have been utilized, While using the spectral maxima on the amplification shifted relative to each other and with spectral profiling of the amplified radiation.
Soon after air drying and subsequent cleansing by using a cotton fabric soaked in alcohol, the film area showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are utilised as lasing components to generate ultrashort (~ a hundred-200 fs) large energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser methods.
Tungstates tend to get substantial Raman coefficients (�?Raman scattering). As a result, they could make major Raman get at reasonable optical KYW Crystal intensities. It is achievable to make use of the laser crystal itself as a Raman converter.
For tungstates, the ytterbium doping concentration can be quite substantial with no major quenching since the changed ions have a very equivalent ion radius, as well as the inter-ion length is relatively large.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the identical dimensions of those chemical components nearly one hundred% of Yb-doping might be obtained.
The thermal conductivity of prevalent double tungstates is in the get to 3–four W/(K m) �?which is not undesirable compared with other laser crystals (While a number of periods lower than for YAG), and rather large in comparison While using the thermal conductivity of standard glasses.
Li2WO4-WO3 flux was successfully applied minimizing The expansion temperature down below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds on the P2/n Area group.
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