Results 21 to 30 of about 1,661,475 (318)
Stokes meta-hologram toward optical cryptography
Nature Communications, 2022 Achieving optical cryptography scheme with both high capacity and security is highly desirable. Here, authors report a Stokes meta-hologram with a hierarchical encryption strategy that allows vector encryptions to produce depth-masked ciphertexts.
Xuyue Guo +7 more
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Light-Field Imaging and Heterogeneous Light Fields [PDF]
, 2016 In traditional light-field analysis, images have matched spectral content which leads to constant intensity on epipolar plane image (EPI) manifolds. This kind of light field is termed homogeneous light field}. Heterogeneous light fields differ in that contributing images may have varying properties such as exposure selected or color filter applied. To
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Light: Science & Applications, 2022 We demonstrate the oscillated photonic spin Hall effect (corresponding to circular or alternating spin current) by using the well-designed Pancharatnam–Berry phase optical elements fabricated in liquid crystal.
Sheng Liu +5 more
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Materials & Design, 2022 Recently, a kind simply structured metasurface made of binary phase modulated meta-unit shows extraordinary beam steering functionality especially in the reflective beam manipulation.
Kangyao Sun +6 more
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CoRR, 2019 Most computer vision systems and computational photography systems are visible light based which is a small fraction of the electromagnetic (EM) spectrum. In recent years radio frequency (RF) hardware has become more widely available, for example, many cars are equipped with a RADAR, and almost every home has a WiFi device.
Manikanta Kotaru +3 more
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ITO-Based Electrically Tunable Metasurface for Active Control of Light Transmission
NanomaterialsIn recent years, the rapid development of dynamically tunable metasurfaces has provided a new avenue for flexible control of optical properties.
Ruize Ma +4 more
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Opto-Electronic Advances, 2023 The conversion-efficiency for second-harmonic (SH) in optical fibers is significantly limited by extremely weak second-order nonlinearity of fused silica, and pulse pump lasers with high peak power are widely employed.
Zhen Hao +5 more
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SensorsWe propose a method for the excitation and controllable tuning of Fano-like resonance based on whispering gallery mode (WGM) microcavities and microfiber modal interferometers (MMIs). By the interaction of the discrete comb-like resonant modes excited by
Qihao Yang +6 more
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APL Photonics, 2022 Simultaneous control of plasmon–exciton and plasmon–trion couplings is fundamentally interesting for tailoring the strong light–matter interaction at the nanoscale and is intriguing for developing high-efficiency optoelectronic and nonlinear photonic ...
Liping Hou +6 more
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Slow-light and evanescent modes at interfaces in photonic crystal waveguides: optimal extraction from experimental near-field measurements [PDF]
, 2011 We develop a systematic approach for simultaneous extraction of the dispersion relations and profiles of multiple modes in periodic waveguides though a special global optimization procedure applied to near-field electric field measurements in the ...
Ha, S. +23 more
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