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Träfflista för sökning "L773:9781557528209 srt2:(2015-2019)"

Sökning: L773:9781557528209 > (2015-2019)

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  • Aktas, Ozan, et al. (författare)
  • Interfacing telecom fibers and silicon core fibers with nano-spikes for in-fiber silicon devices
  • 2018
  • Ingår i: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings. - : Institute of Electrical and Electronics Engineers Inc. (IEEE). ; , s. 1-3
  • Konferensbidrag (refereegranskat)abstract
    • We report fabrication of tapered silicon core fibers with nano-spikes enabling efficient optical coupling into the core, as well as their seamless integration with single mode fibers. A proof-of-concept integrated in-fiber silicon device is demonstrated.
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  • Armougom, J., et al. (författare)
  • Longwave infrared lidar based on parametric sources for standoffdetection of gaseous chemicals
  • 2018
  • Ingår i: Optics InfoBase Conference Papers. - : Optical Society of America. - 9781557528209
  • Konferensbidrag (refereegranskat)abstract
    • We report on a longwave infrared lidar, tailored for detection of chemical warfare agents in the gaseous phase. The emitter is based on single-frequency 2 μm parametric oscillator/amplifier systems followed by a ZnGeP2 downconversion stage.
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  • Arnold, Cord L., et al. (författare)
  • Spatiotemporal coupling of attosecond pulses
  • 2019
  • Ingår i: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. - 9781728104690 ; Part F140-CLEO_Europe 2019
  • Konferensbidrag (refereegranskat)abstract
    • Attosecond pulses in the extreme ultraviolet (XUV) spectral range are today routinely generated via high-order harmonic generation (HHG), when intense ultrashort laser pulses are focused into a gaseous generation medium. The effect is most easily understood in a semi-classical picture [1]. An electron can tunnel ionize from the distorted atomic potential, pick up kinetic energy in the laser field, potentially return to its parent ion and recombine. The excess energy is emitted as XUV photon. The process repeats for every half-cycle of the driving field, resulting in a train of attosecond pulses and in the frequency domain in the well-known, odd-order comb of harmonics. Two main families of electron trajectories leading to the same photon energy can be distinguished into 'short' and 'long', according to their time of travel in the continuum. Due to the complicated nature of the HHG process, attosecond pulses usually cannot be separated into their temporal and spatial profiles, but instead have strong chromatic aberration and are spatio-temporally coupled [2-4].
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  • Bergues, B., et al. (författare)
  • Nonlinear interaction of 100-eV attosecond XUV-pulses with core electrons in Xenon
  • 2018
  • Ingår i: Optics InfoBase Conference Papers. - : Optica Publishing Group. - 9781557528209
  • Konferensbidrag (refereegranskat)abstract
    • We demonstrate multiphoton ionization of inner-shell electrons in Xenon with 100-eV attosecond pulses. This was achieved with a novel XUV source based on high-harmonic generation in the gas phase driven with multi-TW few-cycle laser pulses.
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