The KGW Crystal Diaries
The KGW Crystal Diaries
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The thermal conductivity of common double tungstates is of the order to 3–four W/(K m) �?which is not undesirable in contrast with other laser crystals (although a number of periods below for YAG), and pretty significant in contrast While using the thermal conductivity of regular glasses.
We used a transmission grating (TG) like a dispersive component in our stretcher and compressor. A compact configuration was adopted, wherever the stretcher along with the compressor shared a person grating comparable to that in Ref.
Thus There may be small flexibility for optimizing the dispersion payment result. Sub-two hundred fs pulses might be predicted by using a broader bandwidth seed enter. Thanks to the dual-crystal configuration, the laser cavity provides a near diffraction confined laser beam with M
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Amplified pulses by having an Electrical power above 2.5 mJ could be predicted by implementing a better pump electric power on the regenerative amplifier and which makes it get the job done within the read more saturation degree. The laser fluence of ~1 J/cm2 about the dichroic mirrors is thought to become below the harm threshold of substantial-excellent dielectric-coated mirrors.
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The spectral measurements of filament-induced luminescence propose that scintillating Homes of components may be readily researched using femtosecond in close proximity to-infrared mild resource via multiphoton excitation during the filamentation regime, which allows straightforward separation of excitation and emission wavelengths and lower hazard of optical injury.
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-switched output spectrum of the regenerative amplifier supports a sub-a hundred and sixty fs pulse amplification. Hence, pulses with energies of approximately two mJ and period underneath 200 fs is usually attained employing greater-high-quality dichroic mirrors in addition to a broader-spectrum laser seed. This regenerative amplifier will work as a very good pre-amplifier for even more laser amplification.
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The two energies are marked via the dashed traces as well as their values are labeled while in the plots. The similar capabilities were also observed in KGW and YAG crystals, whose spectral broadening dynamics are revealed for your comparison in Fig. four.