Results 31 to 40 of about 1,237,711 (248)
Experimental Demonstration of >230{\deg} Phase Modulation in Gate-Tunable Graphene-Gold Reconfigurable Mid-Infrared Metasurfaces [PDF]
, 2017 Metasurfaces offer significant potential to control far-field light propagation through the engineering of amplitude, polarization, and phase at an interface. We report here phase modulation of an electronically reconfigurable metasurface and demonstrate
Atwater, Harry A. +7 more
core +4 more sources
A New Method for Total Fat Detection in Raw Milk Based on Dual Low-Coherence Interferometer
Sensors, 2019 The present work experimentally demonstrates a multimode fiber optic sensing setup for total fat detection in raw milk samples. The optical fiber arrangement incorporates a low-coherence Fabry−Perot cavity operating in dual response.
Abraham Gastélum-Barrios +4 more
doaj +1 more source
Controllable linear $\pi$-phase modulation in a thermal atom vapor without diffraction or absorption [PDF]
, 2014 A scheme is proposed to achieve substantial controllable phase modulation for a probe field propagating through a thermal atomic vapor in double-$\Lambda$ configuration.
Evers, Jörg, Zhang, Lida
core +3 more sources
Graphene–silicon phase modulators with gigahertz bandwidth [PDF]
Nature Photonics, 2017 We demonstrate a 10Gb/s Graphene Phase Modulator (GPM) integrated in a Mach-Zehnder interferometer configuration. This is a compact device, with a phase-shifter length of only 300$\mu$m, and 35dB extinction ratio. The GPM has modulation efficiency of 0.28Vcm, one order of magnitude higher compared to state-of-the-art depletion p-n junction Si phase ...
Sorianello, V +9 more
openaire +6 more sources
IEEE Photonics Journal, 2013 A noise reduction method of Fresnel computer-generated hologram (CGH) using wavelet transform and smooth filter is presented. Noise in hologram is very difficult to remove because an interference pattern is recorded on a digital camera during the digital
Le Thanh Bang +4 more
doaj +1 more source
Advances in Physics: X, 2022 Since its first implementation in 2006, in fluorescence detected Fourier transform excitation spectroscopy of rubidium atoms, phase modulation is being increasingly used in nonlinear spectroscopy.
Khadga J. Karki, Marcelo F. Ciappina
doaj +1 more source
, 2012 The correct amplitude and phase modulation formalism of the Blazhko modulation is given. The harmonic order dependent amplitude and phase modulation form is equivalent with the Fourier decomposition of multiplets.
Alcock +26 more
core +1 more source
All-optical $\mathcal{PT}$-symmetric amplitude to phase modulator
, 2015 We study electromagnetic field propagation through a planar three-waveguide coupler with linear gain and loss, in a configuration that is the optical analog of a quantum $\mathcal{PT}$-symmetric system, and provide its closed-form analytic propagator. At
Gutiérrez, Oscar Ignacio Zaragoza +2 more
core +1 more source
Null ellipsometer with phase modulation
Optics Express, 2004 A new null ellipsometer is described that uses photoelastic modulator (PEM). The phase modulation adds a good signal-to-noise ratio, high sensitivity, and linearity near null positions to the traditional high-precision nulling system. The ellipsometric angles Delta and psi are obtained by azimuth measurement of the analyzer and the polarizer-PEM system,
Postava, Kamil +5 more
openaire +4 more sources
Frontiers in Robotics and AI, 2021 Walking animals demonstrate impressive self-organized locomotion and adaptation to body property changes by skillfully manipulating their complicated and redundant musculoskeletal systems.
Tao Sun +6 more
doaj +1 more source