Results 81 to 90 of about 5,256,222 (166)

Chromatic dispersion monitoring of 80-Gb/s OTDM data signal via two-photon absorption in a semiconductor microcavity [PDF]

, 2007
In this letter, a novel method of chromatic dispersion monitoring via two-photon absorption (TPA) is investigated. A specially designed semiconductor microcavity is employed as a TPA detector for monitoring data signals operating at rates up to 80Gb/s ...
Guo, Wei Hua, O\u27Dowd, John, O'Dowd, John, Donegan, John Francis, Folliot, Hervé, Donegan, J.F., O'Dowd, J., Bradley, A.L., Guo, W.H., Maguire, P. J., Folliot, H., Lynch, M., Barry, Liam P., Bondarczuk, Krzysztof, Lynch, Michael, Barry, L.P., Bondarczuk, K., Bradley, Ann Louise, Maguire, Paul J.   +18 more
core   +2 more sources

Twenty Years of Rad-Hard K14 SPAD in Space Projects

Sensors, 2015
During last two decades, several photon counting detectors have been developed in our laboratory. One of the most promising detector coming from our group silicon K14 Single Photon Avalanche Diode (SPAD) is presented with its valuable features and space ...
Vojtěch Michálek, Ivan Procházka, Josef Blažej   +2 more
doaj   +1 more source

Alluvial ridge morphology on avulsing rivers

Sedimentology, Volume 73, Issue 6, Page 2311-2337, October 2026.
ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley   +1 more source

High Purcell factor photonic crystal cavities for single photon sources [PDF]

, 2006
Enhancement of spontaneous emission is of crucial importance in the design of high efficiency single photon sources. This can be achieved by creating defect cavities with both high Q and small effective mode volume, which results in a high Purcell factor.
Cryan, MJ, Rarity, JG, Sanchis Martinez, L, Singh, V, Ho, Y-LD   +4 more
core   +1 more source

Single-Photon Depth Reconstruction at Low Signal-Background Ratio Based on Four-Dimensional Attention Mechanism

Remote Sensing
Single-photon Light Detection and Ranging (LiDAR), which is capable of detecting single-photon signals, has developed rapidly in the field of long-range imaging.
Senlin Feng, Tong Liu, Jianghua Cheng, Bang Cheng, Yahui Cai, Yunwang Zhang   +5 more
doaj   +1 more source

Simulating Regional‐Scale Aerosol Radiative Effects of Wildfire Smoke Using a High‐Resolution Coupled Meteorology‐Chemistry Model: HRRR‐Chem

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract Wildfires are increasing in frequency and intensity, strongly influencing both regional air quality and the Earth's radiation budget via their aerosol emissions. Relying on an unparalleled observational data set from the 2019 NOAA/NASA FIREX‐AQ campaign, this study quantifies the direct radiative effects of two wildfires using the HRRR‐Chem ...
Minsu Choi, Ravan Ahmadov, J. L. Schnell, Johana Romero‐Alvarez, Sudheer Bhimireddy, Haiqin Li, Joshua P. Schwarz, Pedro Campunzano Jost, Hongyu Guo, Jose L. Jimenez, Pawan Gupta, Thomas F. Eck, Philippe Goloub, Olga Kalashnikova, Chuanyu Xu, Fangjun Li, R. Bradley Pierce, Georg A. Grell   +17 more
wiley   +1 more source

Modelling the polarisation mode control of single quantum-dot emission in elliptical micro-pillar microcavities based on DBR mirror pairs using the FDTD method [PDF]

, 2006
We use the finite difference time domain method (FDTD) to investigate polarisation control of single-photon emission from single quantum dots confined in elliptical micro-pillar microcavities.
Cryan, MJ, C. J. Railton, I. J. Craddock, Rarity, JG, T. Cao, Ivanov, P, Craddock, IJ, Ho, Y-LD, Cao, T, P. S. Ivanov, Y. -L. D. Ho, Railton, CJ, M. J. Cryan, J. G. Rarity   +13 more
core   +1 more source

Photonic Integrated Circuit Platform on 3 μm Thick Silicon‐on‐Insulator and Its Application Examples

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
This paper gives an overview of the 3 μm SOI PIC platform and explains its unique characteristics, such as ultra‐high mode confinement, low losses, dense integration, polarization‐independent operation, small phase errors, and ultra‐broadband operation.
Timo Aalto, Dura Shahwar, Markku Kapulainen, Mikko Harjanne, Katherine Bryant, Somnath Paul, Päivi Heimala, Fei Sun, Jae‐Wung Lee, Ari Hokkanen   +9 more
wiley   +1 more source

Aerial LiDAR Techniques: Lineer-Mode LiDAR and Photon Counting LiDAR

, 2022
LiDAR tekniklerindeki gelişmeler, hava platformlarından arazi topoğrafyası ölçmelerinde geleneksel lineer-mode LiDAR (LML) yöntemine alternatif olarak, Geiger-mode LiDAR (GML) ve tekli-foton LiDAR (Single-Photon LiDAR) yöntemlerini ortaya çıkarmıştır ...
Altuntaş, Cihan
core  

Robust real-time 3D imaging of moving scenes through atmospheric obscurant using single-photon LiDAR. [PDF]

Sci Rep, 2021
Tobin R, Halimi A, McCarthy A, Soan PJ, Buller GS.   +4 more
europepmc   +1 more source