Results 81 to 90 of about 224,841 (297)

Cascaded Random Raman Fiber Laser With Low RIN and Wide Wavelength Tunability

open access: yesPhotonic Sensors, 2022
Cascaded random Raman fiber lasers (CRRFLs) have been used as a new platform for designing high power and wavelength-agile laser sources. Recently, CRRFL pumped by ytterbium-doped random fiber laser (YRFL) has shown both high power output and low ...
Bing Han   +3 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Excess Intensity Noise in a Nonlinear Amplifying Loop-Mirror-Based Mode-Locked Laser from a Non-Reciprocal Phase Bias

open access: yesPhotonics
We demonstrate a low-intensity-noise, nonlinear amplifying loop-mirror-based mode-locked fiber laser by optimizing the polarization of the non-reciprocal phase bias and the pump current.
Dohyeon Kwon
doaj   +1 more source

Mode Suppression Ratio of CW Laser Diode and its Influence on Optical Communication Network [PDF]

open access: yesمجلة التربية والعلم, 2012
: The influence of mode suppression ratio on the dynamics of semiconductor laser will be investigated in this paper, especially in a high bit rate optical communication.
Erada A. K. Al-Dabbagh   +1 more
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

The Combined Effect of Signal-Dependent and Relative Intensity Noise on Mutual Information in Laser Diode-Based VLC Systems

open access: yesIEEE Access
Laser diode (LD)-powered luminaires are expected to become increasingly prevalent in residential and commercial environments. This trend creates an opportunity to develop visible light communication (VLC) systems, which are supported by the ultra-high ...
Emin Tugcu
doaj   +1 more source

EFFECT OF PHASE-SHIFT INTERFERENCE ON THE NOISE IMMUNITY OF CORRELATION DEMODULATOR OF SIGNALS WITH MULTIPLE PHASE SHIFT KEYING

open access: yesРоссийский технологический журнал, 2019
The energy and spectral advantages of signals with phase shift keying predetermined their widespread use in modern digital navigation, communications and television systems. The use of such signals is the base of communication standards of DVB-S, DVB-S2 /
Gennady V. Kulikov   +2 more
doaj   +1 more source

Highly Sensitive Microsensor Based on Absorption Spectroscopy: Design Considerations for Optical Receiver

open access: yesIEEE Access, 2020
The development of a biomedical sensor involves an extremely sensitive optoelectronics system whose foundations lie on intracavity absoprtion spectroscopy.
Usman Masud   +4 more
doaj   +1 more source

METHODS FOR MEASURING RELATIVE NOISE INTENSITY (RIN) OF LASER RADIATION

open access: yesSYNCHROINFO JOURNAL, 2023
Over the past decades, in the field of ultra-wideband receiving and transmitting systems, there has been a process of replacing “electronic” systems with “photonic” ones. This transition is primarily due to the fact that the photon, by its nature, has no charge and mass, unlike electrons.
Igor S. Kashevsky, Valentin S. Speransky
openaire   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

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