Panelist: Piredda

Light–Matter Interactions

  • Spotlight Summary by Giovanni Piredda

    • Orbital angular momentum in noncollinear second-harmonic generation by off-axis vortex beams
    • Light beams can carry “orbital” angular momentum, that is, an angular momentum directed along the beam’s propagation. This angular momentum is in general associated with an azimuthal dependence of the phase of the type...
    • J. Opt. Soc. Am. B 28(11) 2806-2811 (2011) View: Abstract | HTML | PDF

  • Spotlight Summary by Giovanni Piredda

    • Visible light reflection spectra from cuticle layered materials
    • Sometimes, when asked "What are the applications of Optics?" I get caught off-guard (because the applications of optics are very, very many), and I give a short, generic and conventional answer. I know for a fact that I...
    • Opt. Mater. Express 1(1) 85-100 (2011) View: Abstract | HTML | PDF

  • Spotlight Summary by Giovanni Piredda

    • Absolute instability in backward wave four-wave mixing: spatial effects
    • The spontaneous formation of patterns in nonlinear optical systems, starting from smooth input beams, is known in many different situations and for many different nonlinear optical media. For example, beams with an...
    • J. Opt. Soc. Am. B 27(7) 1481-1486 (2010) View: Abstract | HTML | PDF

Optoelectronics

  • Spotlight Summary by Giovanni Piredda

    • Demonstration of tunable optical generation of higher-order modulation formats using nonlinearities and coherent frequency comb
    • The problem of optical modulations is a current topic in high-speed telecommunication systems. The discretization of an optical signal in more than two levels allows the transmission of more than one bit of information...
    • Opt. Lett. 39(16) 4915-4918 (2014) View: Abstract | HTML | PDF

  • Spotlight Summary by Giovanni Piredda

    • Theory of surface second-harmonic generation in silica nanowires
    • The second harmonic of a light beam can be generated efficiently only under particular conditions. A dipolar polarization oscillating at the second harmonic can be generated only in noncentrosymmetric materials;...
    • J. Opt. Soc. Am. B 27(7) 1317-1324 (2010) View: Abstract | HTML | PDF

Topics

Recent Comments

  1. Demonstrating Arago–Fresnel laws with Bessel beams from vectorial axicons [1]
  2. Tandem dual-functioning multiple-quantum-well diodes for a self-powered light source [1]
  3. High-performance modified uni-traveling carrier photodiode integrated on a thin-film lithium niobate platform [1]