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Träfflista för sökning "WFRF:(Menoni C. S.) srt2:(2009)"

Sökning: WFRF:(Menoni C. S.) > (2009)

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1.
  • Menoni, C. S., et al. (författare)
  • Advances in Nanoscale Resolution Soft X-Ray Laser Microscopy
  • 2009
  • Ingår i: X-RAY LASERS 2008, PROCEEDINGS. - : Springer Netherlands. - 9781402099236 ; , s. 341-347
  • Konferensbidrag (refereegranskat)abstract
    • We review our most recent results on table-top, nanometer-scale resolution, microscopy using compact soft x-ray lasers developed at Colorado State University. We have realized the first demonstration of wavelength-resolution microscopy in the soft x-ray spectral range. Images of carbon nanotubes, 50 nm in diameter, were obtained with a single similar to 1 ns duration laser pulse from a desk-top size capinary discharge 46.9 nm laser. We fully characterized the new microscope by measuring the modulation transfer function of the instrument for zone plate objectives with three different numerical apertures, demonstrating that 54 nm half-period structures can be resolved. The combination of near-wavelength spatial resolution with high temporal resolution imaging opens myriad opportunities for imaging nanoscale structures.
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2.
  • Martz, Dale, et al. (författare)
  • Large area high efficiency broad bandwidth 800 nm dielectric gratings for high energy laser pulse compression
  • 2009
  • Ingår i: Optics Express. - : Optical Society of America. - 1094-4087. ; 17:26, s. 23809-23816
  • Tidskriftsartikel (refereegranskat)abstract
    • We have demonstrated broad bandwidth large area (229 mm x 114 mm) multilayer dielectric diffraction gratings for the efficient compression of high energy 800 nm laser pulses at high average power. The gratings are etched in the top layers of an aperiodic (Nb0.5Ta0.5)2O5-SiO2 multilayer coating deposited by ion beam sputtering. The mean efficiency of the grating across the area is better than 97% at the center wavelength and remains above 96% at wavelengths between 820 nm and 780 nm. The gratings were used to compress 5.5 J pulses from a Ti:sapphire laser with an efficiency above 80 percent.
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