Results 91 to 100 of about 86,750 (278)

Ultra-narrow (sub-MHz) linewidth emission from discrete mode laser diodes [PDF]

, 2007
A class of laser which exhibits ultra-narrow sub MHz linewidth emission necessary for numerous applications in optical communications and sensors is described.
Kelly, Brian, J. O'Gorman, O'Gorman, J., Besnard, P., Jones, D., Besnard, Pascal, D. Jones, Guignard, Celine, Barry, Liam P., P. Besnard, C. Guignard, J. Patchell, L. P. Barry, B. Kelly, Patchell, J., O'Gorman, James   +15 more
core   +1 more source

Al1−xHfxN$\text{Al$_{1-x}$Hf$_{x}$N}$ Thin Films with Enhanced Piezoelectric Responses for GHz Surface Acoustic Wave Devices

Advanced Electronic Materials, EarlyView.
Reactively sputtered wurtzite Al1‐xHfxN thin films, exhibiting strong c‐axis texture and enhanced piezoelectric response, are demonstrated as a cost‐effective alternative to Al1‐xScxN. X‐ray absorption spectroscopy reveals that cross‐gap N 2p–Hf 5d hybridization increases the Born effective charge and enables a multifold increase in piezoelectric ...
Laura I. Wagner, Verena Streibel, Esperanza Luna, Katarina S. Flashar, Valentin Walbrunn, Walid Anders, Nicole Volkmer, Doreen Steffen, Katrin Morgenroth, Frans Munnik, Tsedenia A. Zewdie, Saswati Santra, Jutta Schwarzkopf, Ian D. Sharp, Mingyun Yuan   +14 more
wiley   +1 more source

An investigation of chirped fibre Bragg gratings Fabry-Perot interferometer for sensing applications [PDF]

, 2005
Fibre interferometer configurations such as the Michelson and Fabry-Perot (FP) have been formed using uniformed and chirped Fibre Bragg Gratings (FBG) acting as partial reflectors. As well as increasing the dynamic range of the interferometer, chirped
Cheung, Chi Shing
core   +4 more sources

Estimation precision of degree of polarization in the presence of signal-dependent and additive Poisson noises [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
We address precision of estimation of the degree of polarization (DOP) from the orthogonal state contrast image (OSCI) in the presence of both signal-dependent Poisson noise due to useful signal, and additive Poisson noise due to dark current and / or ...
Bénière Arnaud, Goudail François, Alouini Mehdi, Dolfi Daniel   +3 more
doaj   +1 more source

On the Impact of Mechanical Constraint on Band Structure and Photo‐Elastic Effect in Photonic Resonators

Advanced Physics Research, EarlyView.
We computationally investigate the mechanical, electronic, and optical properties of strained GeSn microdisks on silicon substrates. By combining photo‐elasticity, strain‐dependent band‐structure calculations, and optical mode analysis, we study how strain distribution, structural configuration, and temperature affect the electronic band structure and ...
Jon Schlipf, Ignatii Zaitsev, Inga Anita Fischer, Davide Spirito, Bernd Witzigmann, Costanza Lucia Manganelli   +5 more
wiley   +1 more source

Fabry-Perot Lasers as Enablers for Parallel Reservoir Computing

, 2020
We introduce the use of Fabry-Perot (FP) lasers as potential neuromorphic computing machines with parallel processing capabilities. With the use of optical injection between a master FP laser and a slave FP laser under feedback we demonstrate the ...
Charis Mesaritakis (14355675), Adonis Bogris (14355684), Stavros Deligiannidis (14827837), Pu Li (119107)   +3 more
core   +1 more source

British National Formulary Guidance on prescribing in pregnancy: A descriptive cross‐sectional study

British Journal of Clinical Pharmacology, EarlyView.
Aim To assess how well pregnancy‐specific guidance within the British National Formulary supports healthcare professionals to facilitate safe and effective medication use. Methods We performed a manifest content analysis of the text of all pregnancy sections within British National Formulary drug monographs, with inductive and iterative coding.
Hannah Johnson, Cleodie Swire, Lakshiv Dhingra, Toqa El‐Nahhas, Michelle Essiam, Salma Muse, Maria Tonkova, Nazmin Begum, Joan Morris, Emma Baker   +9 more
wiley   +1 more source

Fabry-Perot microcavity spectra have a fine structure

, 2022
Optical cavities can support many transverse and longitudinal modes. A paraxial scalar theory predicts that the resonance frequencies of these modes cluster in different orders.
M. Wubs (14413890), M. P. van Exter (14406243), C. Koks (12429697), E. Hissink (14413893)   +3 more
core   +1 more source

Screening of bispecific antibodies during single cell cloning of recombinant Chinese hamster ovary cell lines to improve titer and product quality

Biotechnology Progress, EarlyView.
Abstract Development of therapeutic bispecific antibodies (BsAbs) poses significant manufacturability challenges associated with correct chain pairing and an increased diversity of impurities. Here we address this with a product quality assessment during cell line development (CLD), forgoing the need for genetic characterization during cell line ...
Molly Robinson, Jessica Willmott, Holly Corrigall, Daniela Lega, Joseph Stirling, Vithiya Vimalraj, Mitul Patel, Robyn Emmins   +7 more
wiley   +1 more source

Chemical engineering as an essential element of industrial biotechnology in Mexico: New aims in research and university education

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract On the centennial of higher education in Chemical Engineering in Mexico, it is pertinent to revisit the key stages that have contributed to its consolidation as a vital discipline for the nation's scientific and technological advancement. Although the initial mission of chemical engineering education was primarily oriented toward the training ...
Agustín López Munguía, Octavio T. Ramírez, Rafael Vazquez‐Duhalt, Eduardo Bárzana   +3 more
wiley   +1 more source