KGW Crystal Can Be Fun For Anyone
KGW Crystal Can Be Fun For Anyone
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Investigating tumor perfusion by hyperpolarized (13) C MRI with comparison to standard gadolinium distinction-Increased MRI and pathology in orthotopic human GBM xenografts.
Although ytterbium-doped laser attain media usually exhibit a little quantum defect, ytterbium-doped tungstates make it possible for for particularly modest values. By way of example, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW could be most effectively pumped about 981 nm.
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As a result There may be very little flexibility for optimizing the dispersion compensation effect. Sub-two hundred fs pulses is often anticipated which has a broader bandwidth seed enter. Because of the twin-crystal configuration, the laser cavity provides a in the vicinity of diffraction minimal laser beam with M
-switched method. The bandwidth during the orthogonal orientation was Evidently A lot broader. The calculated Fourier rework minimal pulse duration was as shorter as sub-160 fs. Beneath the configuration where by The 2 crystals were being positioned in the exact same orientation, with the seed input, the amplified pulse bandwidth was only three nm with a hundred and eighty μJ Vitality when it broke the dichroic mirrors.
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The black line denotes the configuration with the crystals positioned in a similar orientation, whilst the pink line is underneath the configuration of crystals put in orthogonal orientation.
We plan to spice up the pulse Electricity to over forty mJ in two-stage multi-move amplifiers, corresponding to a obtain aspect of 20. In Each and every amplifier, we may even undertake two cascaded crystals put beneath orthogonal orientation to lessen the thermal load on Just about every crystal and compensate to the achieve-narrowing effect.
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Despite the fact that BGO, GGG, YSO, LSO and LYSO at times serve as laser hosts37, They're largely recognized as effective scintillators, whose scintillation Qualities are researched rather well38. However, the nonlinear optical Houses of these crystals and so their probable to function nonlinear supplies for SC generation especially, and another experiments relating to nonlinear propagation of powerful femtosecond laser pulses, stay quite badly analyzed. To this point, GGG, LT23,twenty five and YSO24 were being only sketchily examined for SC generation with Ti:sapphire laser pumping, nonetheless, to the most beneficial of our expertise, Not one of the investigated components had been examined with Yb-laser pumping, especially for what considerations their effectiveness at quite significant (tens to many kHz) pulse repetition premiums.
-switched laser output beneath the two crystal placement configurations. The black line denotes the configuration Along with the crystals positioned in the exact same orientation, though the crimson line is underneath the configuration of crystals put in orthogonal orientation.
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