Results 51 to 60 of about 11,595,150 (357)

Long wavelength VCSEL-by-VCSEL optical injection-Locking [PDF]

, 2009
VCSEL-by-VCSEL optical injection-locking to obtain high cut-off frequencies of 1.3 μm Vertical-Cavity Surface-Emitting Lasers (VCSELs) is demonstrated. A detailed physical explanation of the underlying mechanism is presented.
Sirbu, A., Iakovlev, Vladimir, Bacou, A., Rissons, A., Iakovlev, V., Bacou, Alexandre, Mollier, Jean-Claude, Kapon, Eli, Kapon, E., Hayat, A., Mollier, J.C., Rissons, Angélique, Sirbu, Alexei, Hayat, Ahmad   +13 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Tissue surface as the reference arm in Fourier domain optical coherence tomography

, 2012
We present a simple method applicable to common-path Fourier domain optical coherence tomography (OCT) in which the tissue surface is used as the reference arm.
Giardini, Mario Ettore, Krstajić, Nikola; id_orcid, Brown, C Tom A, Krstajic, Nikola, Brown, C.T.A., Dholakia, Kishan, Giardini, Mario Ettore; id_orcid, Brown, Christian Tom A.   +7 more
core   +1 more source

Computational and Experimental Analysis of Gold Nanorods in Terms of Their Morphology: Spectral Absorption and Local Field Enhancement

Nanomaterials, 2021
A nanoparticle’s shape and size determine its optical properties. Nanorods are nanoparticles that have double absorption bands associated to surface plasmon oscillations along their two main axes.
Juan Manuel Núñez-Leyva, Eleazar Samuel Kolosovas-Machuca, John Sánchez, Edgar Guevara, Alexander Cuadrado, Javier Alda, Francisco Javier González   +6 more
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Nonlinear optical thresholding in a 4-Channel OCDMA system via two-photon absorption [PDF]

, 2009
We demonstrate the use of a Two-Photon Absorption based detector in an OCDMA system.
K. J. Dexter, Petropoulos, P., Richardson, D.J., Dexter, Karl J., Reid, Douglas A., Reid, D.A., Barry, Liam P., Dexter, K.J., D. J. Richardson, Barry, L.P., D. A. Reid, L. P. Barry, P. Petropoulos   +12 more
core   +1 more source

Dual Optical Injection in Semiconductor Lasers with Zero Henry Factor

International Journal of Optics
The dynamics of semiconductor lasers subject to dual optical injections are numerically investigated with a zero linewidth enhancement factor. With the aid of stability maps, we show that different chaotic and nonlinear dynamics can be produced (even ...
Najm M. Al-Hosiny
doaj   +1 more source

Raman scattering in high-refractive-index nanostructures

Nanophotonics, 2020
The advent of resonant dielectric nanomaterials has provided a new path for concentrating and manipulating light on the nanoscale. Such high-refractive-index materials support a diverse set of low-loss optical resonances, including Mie resonances ...
Raza Søren, Kristensen Anders
doaj   +1 more source

Kerr-Enhanced Optical Spring

Physical Review Letters
We propose and experimentally demonstrate the generation of enhanced optical springs using the optical Kerr effect. A nonlinear optical crystal is inserted into a Fabry-Perot cavity with a movable mirror, and a chain of second-order nonlinear optical effects in the phase-mismatched condition induces the Kerr effect.
Sotatsu Otabe, Wataru Usukura, Kaido Suzuki, Kentaro Komori, Yuta Michimura, Ken-ichi Harada, Kentaro Somiya   +6 more
openaire   +4 more sources

Plasmon-enhanced optical sensors: a review [PDF]

The Analyst, 2015
This paper presents a critical review of recent research progress in plasmonic sensors, plasmon-enhanced fluorescence sensors, and surface-enhanced Raman scattering sensors. It places emphasis on the sensor design strategies, and highlights the applications of sensors in healthcare, homeland security, food safety and environmental monitoring.
Ming, Li, Scott K, Cushing, Nianqiang, Wu   +2 more
openaire   +2 more sources