Single-pixel identification of 2-dimensional objects by using complex Laguerre–Gaussian spectrum containing both azimuthal and radial modal indices
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DOI: 10.1016/j.optcom.2020.126557
Abstract: Abstract We simulate and experimentally demonstrate the optical single-pixel identification of two-dimensional (2D) objects by analyzing the corresponding complex-valued (i.e, amplitude and phase) Laguerre-Gaussian ( LG l , p ) spectra containing both the azimuthal… read more here.
Keywords: pixel identification; containing azimuthal; laguerre gaussian; azimuthal radial ... See more keywords
Azimuthal and radial modulation of double-four-wave mixing in a coherently driven graphene ensemble.
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DOI: 10.1364/oe.440690
Abstract: We investigate in detail the azimuthal and radial modulation (i.e., the azimuthal order lj and radial order pj with j = 1, 2) of double-four-wave mixing (double-FWM) by use of two higher-order Laguerre-Gaussian (LG) beams in a… read more here.
Keywords: four wave; graphene; double four; azimuthal radial ... See more keywords
Multi-pixel photoconductive emitters for the controllable generation of azimuthal and radial terahertz beams.
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DOI: 10.1364/oe.473086
Abstract: A multi-pixel photoconductive emitter is reported that generates THz beams with either azimuthal, radial or linear polarization states. Switching between the different polarization states was purely electrical, via the bias voltage applied, circumventing the need… read more here.
Keywords: pixel photoconductive; photoconductive emitters; optics; azimuthal radial ... See more keywords