An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The comparison with Eyeglasses is suitable For the reason that significant obtain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in gentle absorption at all-around 981 nm tends to make the crystal like minded for diode pumping. It can be further enhanced by its exceptional effectiveness in this method, 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 potent linear arrays of semiconductor injection lasers obtaining fiber output. To avoid spectral narrowing for the duration of amplification along with the corresponding lengthening in the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been used, While using the spectral maxima on the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
Right after air drying and subsequent cleansing using a cotton fabric soaked in Alcoholic beverages, the film surface confirmed no indications of peeling or scratches.
Raman, luminescence and transmission spectra expose optical capabilities owing for the presence of thulium ions, and thus the resources may very well be further more examined during the scope of laser and luminescence purposes.
A superior brightnessQ-switched oscillator and regenerative amplifier dependant on a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be extremely higher without the need of considerable quenching since the changed ions have a really very similar ion radius, and the inter-ion distance is comparatively substantial.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to related sizes of such chemical aspects around a hundred% of Yb-doping may very well be accomplished.
The thermal conductivity of typical double tungstates is of your buy to three–4 W/(K m) �?which is not bad when compared with other laser crystals (Though quite a few situations below for YAG), and fairly huge as opposed With all the thermal conductivity of regular Eyeglasses.
Li2WO4-WO3 flux was correctly applied lowering The expansion temperature down below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds on the P2/n Place team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were being measured. The emission spectrum and lifetime on the 3 File four energized point out were established. Making use of typical and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes were being calculated and good settlement with the experimental results was acquired for the two theories.
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