Results 81 to 90 of about 31,453 (270)

Tapered-EDF-Based Mach–Zehnder Interferometer for Dual-Wavelength Fiber Laser

open access: yesIEEE Photonics Journal, 2014
An all-fiber comb filter using a tapered-erbium-doped fiber in a Mach-Zehnder interferometer structure is presented. The free spectral range, extinction ratio, bandwidth, and interference pattern of the comb filter can be shaped by controlling the taper ...
M. I. Md Ali   +6 more
doaj   +1 more source

Photoluminescence and attenuation of spray-pyrolysis-deposited erbium-doped Y2O3 planar optical waveguides [PDF]

open access: yes, 1992
Erbium-doped Y20 3 planar optical waveguides have been fabricated by spray-pyrolysis deposition. The attenuation spectrum of the waveguide shows peaks that are due to absorption of the erbium ions.
Hilderink, L.T.H.   +3 more
core   +2 more sources

Shear Wave Elastography to Assess Respiratory Muscle Function in Congenital Myopathies

open access: yesMuscle &Nerve, EarlyView.
ABSTRACT Introduction/Aims Respiratory muscle dysfunction is prevalent in congenital myopathies and often leads to respiratory failure. Ultrasound shear wave elastography (SWE) measures tissue elasticity and has been proposed as an alternative to invasive measures of respiratory muscle contractility.
J. L. M. van Doorn   +8 more
wiley   +1 more source

Spectroscopic Signatures of Doping in Thin Films of Semiconducting Single‐Walled Carbon Nanotubes

open access: yesSmall, EarlyView.
This review presents an overview of the spectroscopic changes of semiconducting single‐walled carbon nanotubes upon chemical, electrochemical or electrostatic doping. The presence of holes or electrons directly affects visible to far‐infrared absorption, near‐infrared fluorescence and electroluminescence as well as Raman spectra, which enables in‐situ ...
Jana Zaumseil
wiley   +1 more source

Root surface biomodification in periodontal therapy: Biological rationale and clinical applications

open access: yesPeriodontology 2000, EarlyView.
Abstract Regenerative periodontal therapy aims to form new cementum, periodontal ligament, and alveolar bone, all sealed by gingival tissue. The root surface acts as the wound margin during this regeneration process. Root surface biomodification (root conditioning/root decontamination), therefore, seems instrumental in promoting surface decontamination
Muhammad H. A. Saleh   +3 more
wiley   +1 more source

APPLICATION OF JUDD-OFELT THEORY UPON CHLOFLUOROPHOSPHATE GLASS DOPED WITH ERBIUM

open access: yesJournal of Fundamental and Applied Sciences, 2015
A series of erbium doped glasses chlorofluorophosphates were prepared and characterized. The absorption spectra were analyzed to determine the Judd-Ofelt parameters. The optical performance of these doped glasses suggesting the relevance of these glasses
A. Babai   +4 more
doaj   +1 more source

Engineered surface strategies to manage dental implant‐related infections

open access: yesPeriodontology 2000, EarlyView.
Abstract When exposed to the oral environment, dental implants, like natural surfaces, become substrates for microbial adhesion and accumulation, often leading to implant‐related infections—one of the main causes of implant failure. These failures impose significant costs on patients, clinicians, and healthcare systems.
João Gabriel S. Souza   +7 more
wiley   +1 more source

Rare-earth-ion-doped continuous-wave 3μm lasers [PDF]

open access: yes, 2005
This paper reviews the progress on rare-earth-ion doped lasers in the wavelength range near 3μm, with an emphasis on fiber-based devices.
Pollnau, M.
core   +2 more sources

Intrinsically stable light source at telecom wavelengths

open access: yes, 2013
We present a highly stable light source at telecom wavelengths, based on a short erbium doped fiber. The high stability arises from the high inversion of the Er3+ion population.
Guerreiro, Thiago   +3 more
core   +2 more sources

Direct ultrafast laser written C-band waveguide amplifier in Er-doped chalcogenide glass [PDF]

open access: yes, 2012
This paper reports the fabrication and characterization of an ultrafast laser written Er-doped chalcogenide glass buried waveguide amplifier; Er-doped GeGaS glass has been synthesized by the vacuum sealed melt quenching technique.
Asokan, Sundarrajan   +4 more
core   +1 more source

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