Publications associées à Shot noise influence in reconstructed phase image SNR in digital holographic microscopy

Light microscope with photon-counting detector elements and imaging method

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic

A light microscope comprises a light source (10) for illuminating a specimen (35), a photon-counting detector array (60) with a plurality of photon-counting detector elements (61-64) for measuring detection light (15) coming from the specimen (35), wherein ...

2020

Genetic-Optimized Pulse Coding Technique for Brillouin Distributed Optical Fiber Sensing

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Simon Adrien Zaslawski, Sheng Wang, Jian Wu

A single code sequence designed by a genetic searching algorithm is proposed to enhance the signal-to-noise ratio of Brillouin distributed sensors without hardware modification, enabling high-performance and cost-effective sensing over a 200-km-loop setup. ...

2020

Wide-field time-gated phasor analysis of visible fluorescence through highly scattering medium

Edoardo Charbon, Claudio Bruschini, Arin Can Ülkü

Fluorescence sensing is an invaluable research tool in life science and biomedical imaging. Despite its major use and advantages, it mainly remains a tool for in vitro studies since exist fluorophores mainly absorb and emit light in the visible region, in ...

2020

Dynamical Coulomb Blockade as a Local Probe for Quantum Transport

Klaus Kern, Markus Etzkorn, Jacob Senkpiel

Quantum fluctuations are imprinted with valuable information about transport processes. Experimental access to this information is possible, but challenging. We introduce the dynamical Coulomb blockade (DCB) as a local probe for fluctuations in a scanning ...

2020

Optimizing the signal-to-noise ratio for direct-detection BOTDA

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Sheng Wang

The signal-to-noise ratio (SNR) of the measurement for direct-detection Brillouin optical time-domain analyzers is modelled and experimentally validated, with and without the use of optical pre-amplification. Results indicate that preamplification associat ...

SPIE2019

High-dynamic-range imaging with photon-counting arrays (Conference Presentation)

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic

We present a comprehensive analysis to guide the use of the nonlinear photon response in photon-counting arrays to extend their optical dynamic range far beyond 1/Tdead, where Tdead is the pixel dead time after photon detection, so as to achieve a high dyn ...

2019

Objective evaluation of static beamforming on the quality of speech in noise

Hervé Lissek, Gilles André Courtois, Vincent Pierre Olivier Grimaldi

Beamforming is commonly used in devices such as in hearing instruments (HI) with a view to reducing noise. It consists in focusing on audio signals arising from a prescribed steering direction while suppressing those coming from other directions. The effic ...

European Acoustics Association2018

Impact of Fitting and Digital Filtering on Signal-to-Noise Ratio and Brillouin Frequency Shift Uncertainty of BOTDA Measurements

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Simon Adrien Zaslawski

The intricate relationships linking signal-to-noise ratio and Brillouin frequency shift uncertainty after post-processing of Brillouin optical time-domain analysis measurements are investigated, highlighting the crucial impact of fitting. ...

OSA2018

The Dark Energy Survey: Data Release 1

Yi Zhang, Xin Chen, Eduardo Sanchez, Jonathan Andrew Blazek

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations ...

IOP PUBLISHING LTD2018

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Shot noise influence in reconstructed phase image SNR in digital holographic microscopy

Light microscope with photon-counting detector elements and imaging method

Genetic-Optimized Pulse Coding Technique for Brillouin Distributed Optical Fiber Sensing

Wide-field time-gated phasor analysis of visible fluorescence through highly scattering medium

Dynamical Coulomb Blockade as a Local Probe for Quantum Transport

Optimizing the signal-to-noise ratio for direct-detection BOTDA

Material Characterization with PZE actuated Suspended Microchannel Resonators

High-dynamic-range imaging with photon-counting arrays (Conference Presentation)

Objective evaluation of static beamforming on the quality of speech in noise

Impact of Fitting and Digital Filtering on Signal-to-Noise Ratio and Brillouin Frequency Shift Uncertainty of BOTDA Measurements

The Dark Energy Survey: Data Release 1

Graph Chatbot

Chattez avec Graph Search

The Dark Energy Survey: Data Release 1

Impact of Fitting and Digital Filtering on Signal-to-Noise Ratio and Brillouin Frequency Shift Uncertainty of BOTDA Measurements

High-dynamic-range imaging with photon-counting arrays (Conference Presentation)

Material Characterization with PZE actuated Suspended Microchannel Resonators

Optimizing the signal-to-noise ratio for direct-detection BOTDA

Wide-field time-gated phasor analysis of visible fluorescence through highly scattering medium

Genetic-Optimized Pulse Coding Technique for Brillouin Distributed Optical Fiber Sensing

Light microscope with photon-counting detector elements and imaging method

Dynamical Coulomb Blockade as a Local Probe for Quantum Transport

Objective evaluation of static beamforming on the quality of speech in noise