Results 81 to 90 of about 208,947 (326)

Terahertz four-wave mixing spectroscopy for study of ultrafast dynamics in a semiconductor optical amplifier [PDF]

, 1993
Ultrafast dynamics in a 1.5-µm tensile-strained quantum-well optical amplifier has been studied by highly nondegenerate four-wave mixing at detuning frequencies up to 1.7 THz.
Dawson, Jay W., Miller, Barry I., Newkirk, Michael A., Park, Namkyoo, Vahala, Kerry J., Zhou, Jianhui   +5 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Proposal for all-optical switchable and tunable ultrawideband monocycle generation utilizing SOA wavelength conversion and time delay

Photonic Sensors, 2017
An all-optical ultrawideband monocycle generator based on wavelength conversion in a semiconductor optical amplifier (SOA) and optical tunable delay in an optical delay line (ODL) is proposed and simulated.
Zhefeng Hu, Jianhui Xu, Min Hou
doaj   +1 more source

Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables

, 2004
The unconditional entanglement swapping for continuous variables is experimentally demonstrated. Two initial entangled states are produced from two nondegenerate optical parametric amplifiers operating at deamplification.
Changde Xie, D. Bouwmeester, Jiangrui Gao, Kunchi Peng, Qing Pan, Xiaojun Jia, Xiaolong Su, Y. Yan   +7 more
core   +2 more sources

Dihydroorotate dehydrogenase (DHODH) regulates trophoblast syncytialization through organelle stress–induced cellular senescence

FEBS Open Bio, EarlyView.
The inhibition of mitochondrial dihydroorotate dehydrogenase (DHODH) impairs syncytialization and induces cellular senescence via mitochondrial and endoplasmic reticulum stress in human trophoblast stem cells, elevating sFlt1/PlGF levels, a hallmark of placental dysfunction in hypertensive disorders of pregnancy.
Kanoko Yoshida, Kazuya Kusama, Ayaka Horiuchi, Yu Kawaguchi, Atsuya Tsuru, Mikihiro Yoshie, Kazuhiro Tamura   +6 more
wiley   +1 more source

Improvement of continuous-variable quantum key distribution systems by using optical preamplifiers

, 2008
Continuous-variable quantum key distribution protocols, based on Gaussian modulation of the quadratures of coherent states, have been implemented in recent experiments. A present limitation of such systems is the finite efficiency of the detectors, which
E Diamanti, García-Patrón R, Grosshans F, P Grangier, R Tualle-Brouri, Renner R, Renner R Cirac J I, S Fossier, Scarani V Bechmann-Pasquinucci H Cerf N J Dusek M Lütkenhaus N Peev M, Shannon C, Shannon C, T Debuisschert, Zhao Y-B Heid M Rigas J Lütkenhaus N   +12 more
core   +2 more sources

Predicting and Comparing the Subjective Health Experience of Older Cancer Survivors and Non‐Cancer Survivors: A Modeling Approach

Aging and Cancer, EarlyView.
This study underscores the significant influence of frailty and vitality on the subjective health experience of older cancer survivors with acceptance and control emerging as salient mediators. These findings affirm the conceptual and empirical robustness of the model highlighting its potential utility in shaping future interventions for older cancer ...
Damien S. E. Broekharst, Sjaak Bloem, Eline J. Mertens, Nathascha Hanzen, Michel van Agthoven   +4 more
wiley   +1 more source

Development of a Handheld Line Information Reader and Generator for Efficient Management of Optical Communication Lines

Sensors, 2017
A handheld line information reader and a line information generator were developed for the efficient management of optical communication lines.
Jaeyul Lee, Hyungwoo Kwon, Jaewon Song, Mansik Jeon, Jeehyun Kim   +4 more
doaj   +1 more source

A 4 GHz Single-to-Differential Cross-Coupled Variable-Gain Transimpedance Amplifier for Optical Communication [PDF]

, 2021
Samuel B. S. Lee, Kiat Seng Yeo
openalex   +1 more source