Results 41 to 50 of about 208,947 (326)

Sub-millijoule-level Fe:ZnSe chirped pulse amplifier seeded by KTA-based OPA system [PDF]

open access: yesEPJ Web of Conferences
We developed a Fe:ZnSe chirped pulse amplifier with a KTA-based optical parametric amplifier, achieving 0.6 mJ pulses at 4-micron wavelength. It should be inherently carrier envelope phase stable and applicable to strong field science.
Okazaki Daiki   +5 more
doaj   +1 more source

Enhancement of Cavity Cooling of a Micromechanical Mirror Using Parametric Interactions [PDF]

open access: yes, 2009
It is shown that an optical parametric amplifier inside a cavity can considerably improve the cooling of the micromechanical mirror by radiation pressure.
A. Hurwitz   +8 more
core   +2 more sources

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

open access: yesFEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino   +7 more
wiley   +1 more source

Experimental Investigation of a Hybrid S-Band Amplifier Based on Two Parametric Wavelength Converters and an Erbium-Doped Fiber Amplifier

open access: yesPhotonics
Multi-band optical communication presents a promising avenue for the significant enhancement of fiber-optic transmission capacity without incurring additional costs related to new cable deployment via the utilization of the bandwidth beyond the ...
Cheng Guo   +6 more
doaj   +1 more source

Think Outside the Fiber: Imaging Amplifier for Space-Multiplexed Optical Transmission

open access: yesIEEE Photonics Journal, 2012
This paper proposes a simple and practical method to amplify signals for space-multiplexed optical transmission. In this amplification technique, the output facet of the multicore or multimode fiber is mapped back to the same type of fiber after passing ...
Ibrahim Ozdur   +3 more
doaj   +1 more source

A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins

open access: yesFEBS Letters, EarlyView.
We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue   +6 more
wiley   +1 more source

A Low-Power CMOS Trans-Impedance Amplifier for 2.5 Gb/S Optical Communication Systems [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2013
This Paper presents a new Trans-impedance amplifier for optical receiver circuits. The amplifier is based on parallel (R-C) feedback topology which is optimized for power consumption and uses shunt-peaking technique to enhance the frequency bandwidth of ...
Mojgan Mohseni, Mehdi Dolatshahi
doaj  

$\hbox{Er}^{3+}$ and $\hbox{Ce}^{3+}$ Codoped Tellurite Optical Fiber for Lasers and Amplifiers in the Near-Infrared Wavelength Region: Fabrication, Optical Characterization, and Prospects

open access: yesIEEE Photonics Journal, 2012
A tellurite optical fiber doped with Er3+ and Ce3+ ions was designed and fabricated with the aim of assessing its suitability as laser and optical amplifier operating at 1550 nm, compatible with silica fiber standard dimensions.
J. Lousteau   +7 more
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms

open access: yes, 2019
The stability properties of Fourier-based multipass amplifier to misalignments (tilts) of its optical components has been investigated. For this purpose, a method to quantify the sensitivity to tilts based on the amplifier small signal gain has been ...
Antognini, Aldo   +10 more
core   +1 more source

Home - About - Disclaimer - Privacy