Results 11 to 20 of about 122,417 (246)

Short cavity DFB fiber laser based vector hydrophone for low frequency signal detection

open access: yesPhotonic Sensors, 2017
A short cavity distributed feedback (DFB) fiber laser is used for low frequency acoustic signal detection. Three DFB fiber lasers with different central wavelengths are chained together to make three-element vector hydrophone with proper sensitivity ...
Xiaolei Zhang   +7 more
doaj   +1 more source

Mode-Locking Dynamics in an All-PM Figure-Nine Tm-Doped Fiber Laser

open access: yesApplied Sciences, 2022
We report a study on pulse dynamics in figure-nine Tm-doped all-polarization maintaining fiber laser. We analyzed laser operation from self-starting with multi-pulse dynamic to single-pulse operation by decreasing the pump power from the mode-locking ...
Zbigniew Łaszczych   +2 more
doaj   +1 more source

Distributed acoustic sensing with Michelson interferometer demodulation

open access: yesPhotonic Sensors, 2016
The distributed acoustic sensing (DAS) has been extensively studied and widely used. A distributed acoustic sensing system based on the unbalanced Michelson interferometer with phase generated carrier (PGC) demodulation was designed and tested.
Xiaohui Liu   +6 more
doaj   +1 more source

Nonlinear chirped pulse amplification for a 100-W-class GHz femtosecond all-fiber laser system at 1.5 $\unicode{x3bc}$ m

open access: yesHigh Power Laser Science and Engineering, 2023
In this work, we present a high-power, high-repetition-rate, all-fiber femtosecond laser system operating at 1.5 $\unicode{x3bc}$ m. This all-fiber laser system can deliver femtosecond pulses at a fundamental repetition rate of 10.6 GHz with an ...
Yiheng Fan   +12 more
doaj   +1 more source

Random Fiber Laser

open access: yesPhysical Review Letters, 2007
We investigate the effects of two-dimensional confinement on the lasing properties of a classical random laser system operating in the incoherent feedback (diffusive) regime. A suspension of 250 nm rutile (TiO2) particles in a rhodamine 6G solution was inserted into the hollow core of a photonic crystal fiber generating the first random fiber laser and
de Matos, Christiano J. S.   +5 more
openaire   +3 more sources

Research on a new fiber-optic axial pressure sensor of transformer winding based on fiber Bragg grating

open access: yesPhotonic Sensors, 2017
Based on the principle of the fiber Bragg grating, a new type of fiber-optic pressure sensor for axial force measurement of transformer winding is designed, which is designed with the structure of bending plate beam, the optimization of the packaging ...
Yuan Liu   +4 more
doaj   +1 more source

Comparative study on fluoride fibers for mid-infrared generation pumped by a Cr:ZnS oscillator [PDF]

open access: yesEPJ Web of Conferences
We demonstrate a comparative study on single-mode fluoride fibers for mid-IR generation. We took into consideration examples of ZBLAN fibers from all leading manufacturers.
Szewczyk Olga, Kowalczyk Maciej
doaj   +1 more source

Enabling Efficient Mid‐Infrared Luminescence of Tm3+ in a Single Core–Shell Nanocrystal through Erbium Sublattice

open access: yesAdvanced Photonics Research, 2023
Mid‐infrared luminescence at around 1.8 μm has shown great potential in many frontier photonic fields. However, how to realize the 1.8 μm emission of Tm3+ with multiple pump wavelengths and in particular in nanosized hosts has remained a challenge so far.
Wang Sheng   +5 more
doaj   +1 more source

Broadband Metallic Carbon Nanotube Saturable Absorber for Ultrashort Pulse Generation in the 1500–2100 nm Spectral Range

open access: yesApplied Sciences, 2021
Herein, we report on the possibility of ultrashort laser pulse generation in the broadband spectral range using a saturable absorber based on free-standing metallic carbon nanotube thin film.
Maria Pawliszewska   +5 more
doaj   +1 more source

Gain-Managed Nonlinear Amplification in Erbium-Doped Fibers [PDF]

open access: yesEPJ Web of Conferences
This experiment aimed to characterize Gain-Managed Nonlinear amplification (GMN) in Erbium-doped fibers. This effect has so far been presented in Ytterbium-doped fibers and only simulated on Erbium-doped fibers.
Krakowski Mikołaj   +3 more
doaj   +1 more source

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