Results 11 to 20 of about 832,585 (295)
High-gain and high-speed wavefront shaping through scattering media
Nature Photonics, 2023 Wavefront shaping (WFS) is emerging as a promising tool for controlling and focusing light in complex scattering media. The shaping system's speed, the energy gain of the corrected wavefronts, and the control degrees of freedom (DOF) are the most important metrics for WFS, especially for highly scattering and dynamic samples.
Zhongtao Cheng +4 more
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Electronics Letters, 2019 A dither‐based background calibration with data‐weighted averaging logic to correct capacitor mismatch and inter‐stage gain error in pipelined noise shaping successive approximation register ADCs is proposed.
Peng Wang, Jie Sun, Jianhui Wu
doaj +2 more sources
EURASIP Journal on Wireless Communications and Networking, 2021 In order to guarantee a robust transmission of JPWL (JPEG Wireless: Joint Photographic Experts Group Wireless) images through time and frequency selective wireless channels, an efficient adaptive communication strategy is proposed.
Ahmed Hadji +6 more
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Multicarrier Faster-Than-Nyquist Based on Efficient Implementation and Probabilistic Shaping
IEEE Access, 2021 The conventional multicarrier faster-than-Nyquist (MFTN) achieves the spectral efficiency (SE) gain by deep compression. However, deep compression leads to severe intersymbol interference (ISI) or intercarrier interference (ICI).
Hui Che, Kun Zhu, Yong Bai
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Parametric Gain Shaping From a Structured Pump Pulse [PDF]
IEEE Photonics Technology Letters, 2019 We investigate optical parametric amplification in a fiber pumped by a shaped pulse. The temporal structure of the pump impacts directly the instantaneous spectral gain and its temporal measurement is achieved in the spectral domain thanks to a chirped signal with a broad spectrum.
Bigourd, Damien +7 more
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Gain-induced scattering anomalies of diffractive metasurfaces
Nanophotonics, 2020 Photonic nanostructures with gain and loss have long been of interest in the context of diverse scattering anomalies and light-shaping phenomena. Here, we investigate the scattering coefficients of simple gain-doped diffractive metasurfaces, revealing ...
Kolkowski Radoslaw, Koenderink A. Femius
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Automatika, 2023 This research work emphasizes on the development of a unique high-gain BOCUK DC-DC converter for Switched Mode Power Supply (SMPS) applications. The high-gain BOOST-CUK (BOCUK) DC-DC converter combines the benefits of both Boost and Cuk converters for ...
L. Annie Isabella +2 more
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IET Power Electronics, 2023 In this study, H∞ loop shaping is designed for single‐phase pulse width modulation (PWM) rectifier under current sensor gain faults. Pre‐compensator is used to obtain the desired loop shape at all frequencies and robust stabilization through the ...
Motaz Musa Ibrahim +4 more
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Femtosecond pulses at 50-W average power from an Yb:YAG planar waveguide amplifier seeded by an Yb:KYW oscillator [PDF]
, 2012 We report the demonstration of a high-power single-side-pumped Yb:YAG planar waveguide amplifier seeded by an Yb:KYW femtosecond laser. Five passes through the amplifier yielded 700-fs pulses with average powers of 50 W at 1030 nm. A numerical simulation
Baker, Howard John +5 more
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Contrast gain shapes visual time
Frontiers in Psychology, 2010 Traditionally time perception has been considered the product of a central, generic, cognitive mechanism. However, evidence is emerging for a distributive system with modality-specific sensory components (Morrone et al., 2005; Johnston et al., 2006). Here we show that fast contrast adaptation, which can be observed in the retina, induces a change in ...
Aurelio Bruno +2 more
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