KGW Crystal - An Overview
KGW Crystal - An Overview
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Investigating tumor perfusion by hyperpolarized (thirteen) C MRI with comparison to traditional gadolinium contrast-enhanced MRI and pathology in orthotopic human GBM xenografts.
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As a result there is tiny liberty for optimizing the dispersion payment influence. Sub-two hundred fs pulses could be expected that has a broader bandwidth seed input. Because of the dual-crystal configuration, the laser cavity provides a around diffraction minimal laser beam with M
-switched manner. The bandwidth while in the orthogonal orientation was Plainly Significantly broader. The calculated Fourier transform minimal pulse duration was as brief as sub-a hundred and sixty fs. Beneath the configuration exactly where the two crystals had been placed in the same orientation, While using the seed input, the amplified pulse bandwidth was only three nm with one hundred eighty μJ Vitality when read more it broke the dichroic mirrors.
The comparison with Eyeglasses is appropriate For the reason that significant obtain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The opposite was put with its Np -axis parallel Along with the s-polarized direction. A comparison was produced involving a configuration Along with the crystals positioned in the exact same orientation (
Dynamic expression of genes encoding subunits of inward rectifier potassium (Kir) channels inside the yellow fever mosquito Aedes aegypti.
The spectral measurements of filament-induced luminescence advise that scintillating Attributes of products could be conveniently researched applying femtosecond in close proximity to-infrared light source via multiphoton excitation during the filamentation regime, which lets easy separation of excitation and emission wavelengths and very low hazard of optical problems.
We made a diode-pumped Yb:KGW regenerative amplifier as being the front end with the kilohertz terawatt laser technique. Wide bandwidth pulses were being acquired by applying dual crystals with unique orientations of their optical axes[
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A multi-pass principal amplifier will even further Strengthen the Electrical power to earlier mentioned forty mJ. We'll apply cryogenically cooled Yb:KGW technology to restrain the thermal outcome. Two phases of compression will likely be utilized right after amplification. The first stage will involve a typical Treacy-style compressor, and could compress the heartbeat period to beneath three hundred fs having an efficiency of close to 70%. The 2nd stage requires a gasoline-loaded multi-pass cell[
Figure four Beam radius variation on the two crystals while changing the focal length from the thermal lensing result.
Each energies are marked because of the dashed strains and their values are labeled from the plots. The equivalent features were also noticed in KGW and YAG crystals, whose spectral broadening dynamics are proven for any comparison in Fig. 4.