Results 31 to 40 of about 171,254 (238)

Excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides [PDF]

open access: yesNature Communications, 2016
Atomically thin transition metal dichalcogenides are direct-gap semiconductors with strong light–matter and Coulomb interactions. The latter accounts for tightly bound excitons, which dominate their optical properties.
M. Selig   +9 more
semanticscholar   +1 more source

A 20 W, Less-Than-1-kHz Linewidth Linearly Polarized All-Fiber Laser

open access: yesApplied Sciences, 2018
We report a continuous-wave high-output power and narrow-linewidth all-fiber laser at 1550 nm with the master oscillator power amplifier (MOPA) configuration. An all-fiber distributed feedback seed laser was boosted by three cascaded fiber amplifiers. In
Mingyuan Xue   +6 more
doaj   +1 more source

Effects of Linewidth Broadening Method on Recoil of Sodium Laser Guide Star

open access: yesAtmosphere, 2021
The linewidth broadening of the circular-polarized continuous wave laser mitigates the recoil effects of the sodium laser guide star very well. By choice of the optimal laser linewidth, the relations between the laser intensity and average spontaneous ...
Xiangyuan Liu   +6 more
doaj   +1 more source

Applications of 19F-NMR in Fragment-Based Drug Discovery

open access: yesMolecules, 2016
19F-NMR has proved to be a valuable tool in fragment-based drug discovery. Its applications include screening libraries of fluorinated fragments, assessing competition among elaborated fragments and identifying the binding poses of promising hits.
Raymond S. Norton   +3 more
doaj   +1 more source

Characterization and Direct Modulation of a Multi-Section PIC Suited for Short Reach Optical Communication Systems

open access: yesPhotonics, 2020
A multi-section active photonic integrated circuit (PIC) is characterized in detail to gauge its suitability as a transmitter for short reach applications.
Mohab N. Hammad   +6 more
doaj   +1 more source

Linewidth narrowing in free-space-running diamond Brillouin lasers

open access: yesHigh Power Laser Science and Engineering, 2023
This study analyzes the linewidth narrowing characteristics of free-space-running Brillouin lasers and investigates the approaches to achieve linewidth compression and power enhancement simultaneously.
Duo Jin   +7 more
doaj   +1 more source

Narrowing of EIT resonance in a Doppler Broadened Medium [PDF]

open access: yes, 2001
We derive an analytic expression for the linewidth of EIT resonance in a Doppler broadened system. It is shown here that for relatively low intensity of the driving field the EIT linewidth is proportional to the square root of intensity and is ...
A. Karawajczyk   +34 more
core   +3 more sources

Revealing of Li-Ion Transportation in Crystal Lattices by 7Li SAE in Solid-State NMR

open access: yesChinese Journal of Magnetic Resonance, 2020
Spin alignment echo (SAE) is employed here to study the α-LiAsF6/PEO6 system with low poly(ethylene oxide) (PEO) molecular weight. We show that the correlation rate kSAE from SAE experiments, but not the spin-lattice relaxation time and the linewidth, is
ZHANG Wei   +4 more
doaj   +1 more source

Linewidth and frequency jitter measurement of an erbium-doped fiber ring laser by using a loss-compensated, delayed self-heterodyne interferometer [PDF]

open access: yes, 1992
The single-mode line width of erbium-doped, single-frequency, fiber ring laser has been measured by using a newly developed loss-compensated delayed self-heterodyne interferometer that has a resolution of less than 600 Hz.
Dawson, Jay W.   +2 more
core   +1 more source

Approaching the intrinsic photoluminescence linewidth in transition metal dichalcogenide monolayers [PDF]

open access: yes, 2017
Excitonic states in monolayer transition metal dichalcogenides (TMDCs) have been the subject of extensive recent interest. Their intrinsic properties can, however, be obscured due to the influence of inhomogeneity in the external environment.
O. Ajayi   +10 more
semanticscholar   +1 more source

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