Light Field Characterization Essay - 1354 Words

Light Field Characterization The field synthesis is only completed by sampling the synthesized transients. For that we have opted â€Å"Attosecond streaking† technique3,4 for sampling the synthesized transients, which gives an access to the field of the synthesized waveform. For this sampling technique, the generation of isolated EUV attosecond pulse is essential. The sampling takes place at the focus of these transients where the planned experiment takes place in order to attain high intensities. The isolated EUV attosecond pulse is generated by focusing (f~ -35 cm) the light transients generated at the exit of the synthesizer apparatus into a quasi-static gas cell, a thin nickel tube (~2mm inner diameter), filled with neon gas and kept at a†¦show more content†¦This can stand for weeks and allow for having the same synthesized light transient on the sampling and experiment point for a long period of time. The driving radiation travels through the gas cell is transmitted around the margins of th e Zr disc to create an annular beam. The beam profiles of the four channels pulses are not affected by these wires. The multilayer coated mirror, together with the high pass Zr filter, comprise a band pass filter of width centered at , leading the isolation of a single attosecond pulse4,7. A double mirror module comprising a concave multilayer coated inner and metallic Al-coated outer mirror (12.5 cm) focuses the light transients and the EUV attosecond probe into a second neon gas nozzle placed near the entrance of a time-of-flight (TOF) spectrometer. The striking spectrogram is recorded and the electric field of the synthesized waveform is retrieved. The compression of the two octaves supercontinuum led to the generation of subcycle transient generated by the four-channel synthesizer, carried at central wavelength , has Ï„FWHM pulse duration of ~ 1.7 fs as shown in Figure 6. Attosecond light field synthesis The ultrabroadband of the supercontinuum light source spans overShow MoreRelatedThe Army s Education Of Field Grade Officers1389 Words   |  6 Pagesmajor focal point in the US Army’s education of field grade officers is the ability to understand the phenomenon of war, its relationship to society, and its ever-changing character. While the notion of strategic culture fails to be deterministic, there is no doubt that it plays an important role in both why and how a society wages war. 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