Results 71 to 80 of about 329,733 (297)

Single Trench Fiber-Enabled High-Power Fiber Laser

open access: yesPhotonics
As a novel design of large-mode-area fiber, the single trench fiber (STF) providing high higher-order-mode suppression with a large mode area for the fundamental mode shows potential for high-power and high-brightness applications.
Yi An   +11 more
doaj   +1 more source

Spontaneous and stimulated Raman scattering in long low loss fibers [PDF]

open access: yes, 1978
This paper considers the problem of forward Raman scattering process in a single transverse mode fiber. Both pump wave depletion and spontaneous scattering are considered in the analysis.
AuYeung, John, Yariv, Amnon
core   +1 more source

Characterization of Clinical Phenotype to Glial Fibrillary Acidic Protein Concentrations in Alexander Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine the concentration of glial fibrillary acidic protein (GFAP) in cerebrospinal fluid (CSF) and plasma in Alexander disease (AxD) and whether GFAP levels are predictive of disease phenotypes. Methods CSF and plasma were collected (longitudinally when available) from AxD participants and non‐AxD controls.
Amy T. Waldman   +9 more
wiley   +1 more source

Mode-adaptive control of a kilowatt-level large-mode-area fiber laser based on 5×1 photonic lantern

open access: yesHigh Power Laser Science and Engineering
This study presents high-power mode-selective operation in a large-mode-area (LMA) fiber laser. A spatial mode-adaptive control system incorporating a 5×1 photonic lantern was employed to facilitate mode conversion between the LP01 and LP11 modes.
Wenguang Liu   +8 more
doaj   +1 more source

A finite element characterization of a commercial endlessly single-mode photonic crystal fiber: is it really single mode? [PDF]

open access: yes, 2007
One of interesting properties of photonic crystal fibers (PCFs) is their possibility to be single-moded over a wide wavelength range, down to UV, while still having a reasonably large modal profile.
Groesen, E. van   +2 more
core   +2 more sources

Three-color femtosecond source for simultaneous excitation of three fluorescent proteins in two-photon fluorescence microscopy [PDF]

open access: yes, 2012
We demonstrate a fiber-based, three-color femtosecond source for simultaneous imaging of three fluorescent proteins (FPs) using two-photon fluorescence microscopy (2PM).
Horton, Nicholas G.   +5 more
core   +1 more source

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano   +11 more
wiley   +1 more source

Sub-80 fs dissipative soliton large-mode-area fiber laser [PDF]

open access: yesOptics Letters, 2010
We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism.
Baumgartl, M.   +5 more
openaire   +4 more sources

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao   +6 more
wiley   +1 more source

An aging evaluation of the bearing performances of glass fiber composite laminate in salt spray fog environment [PDF]

open access: yes, 2019
The aim of the present paper is to assess the bearing performance evolution of pinned, glass-composite laminates due to environmental aging in salt-spray fog tests.
Bruzzaniti P. G.   +4 more
core   +1 more source

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