Results 21 to 30 of about 5,726,665 (192)

Traveling pulses in a stochastic neural field model of direction selectivity

open access: yesFrontiers in Computational Neuroscience, 2012
We analyze the effects of extrinsic noise on traveling pulses in a neural field model of direction selectivity. The model consists of a one-dimensional scalar neural field with an asymmetric weight distribution consisting of an offset Mexican hat ...
Paul C Bressloff, Jeremy eWilkerson
doaj   +1 more source

Reconstruction of few-fs XUV pulses with a perturbative approach [PDF]

open access: yesEPJ Web of Conferences, 2021
A precise temporal characterization of the pulses involved in pump-probe experiments is crucial for a proper investigation of the ultrafast dynamics in several physical systems.
Moio Bruno   +7 more
doaj   +1 more source

A search for fast radio bursts associated with gamma-ray bursts using the YNAO 40-m radio telescope [PDF]

open access: yesSerbian Astronomical Journal, 2023
We report on the search results of Fast Radio Bursts (FRBs) from three Gamma- ray Bursts (GRBs) at 2256 MHz using the 40-m radio telescope located at the YunNan Astronomical Observatory (YNAO).
Zhang Y.F.   +7 more
doaj   +1 more source

Impact of Strong Raman Self-Frequency Shift on Bound State of Dissipative Solitons

open access: yesInternational Journal of Optics, 2015
Bound dissipative solitons are numerically studied by implementing strong Raman self-frequency shift (RSFS) in an all-normal-dispersion (ANDi) Yb-doped fiber laser.
Cong Xu
doaj   +1 more source

Charge noise and spin noise in a semiconductor quantum device [PDF]

open access: yes, 2014
Self-assembled quantum dots are very attractive as the building blocks for quantum light sources and spin qubits. For instance, a single quantum dot is a robust, fast, narrow-linewidth source of single photons, features not shared by any other ...
Kuhlmann, Andreas V.
core   +1 more source

Self-seeding of a gain-switched integrated dual-laser source for the generation of highly wavelength-tunable picosecond optical pulses [PDF]

open access: yes, 2004
The authors demonstrate the generation of nearly transform-limited optical pulses that are wavelength tunable over almost 50 nm. The wide tuning range is obtained by self-seeding a gain-switched source containing two Fabry-Perot lasers, and employing a ...
Anandarajah, Prince M.   +3 more
core   +2 more sources

Study on 3-inch Hamamatsu photomultipliers

open access: yesEPJ Web of Conferences, 2016
Several kinds of photomultipliers are widely used in astroparticle physics detectors to measure Cherenkov light in media like water or ice. In neutrino telescopes the key element of the detector is the optical module, which consists of one or more ...
Giordano Valentina   +2 more
doaj   +1 more source

Pulse shaping, high average power narrow linewidth Er, Yb co-doped fiber amplifier

open access: yesFrontiers in Physics, 2023
We demonstrate a high repetition rate, high average power narrow-linewidth fiber amplifier at 1.55 μm eye-safe waveband by using a very-large-mode-area active fiber doping Er and Yb, having a 60-μm-diameter core and a 600-μm-diameter inner cladding.
Yunpeng Wang   +4 more
doaj   +1 more source

Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets

open access: yesFrontiers of Optoelectronics, 2023
As a member of Xenes family, germanene has excellent nonlinear saturable absorption characteristics. In this work, we prepared germanene nanosheets by liquid phase exfoliation and measured their saturation intensity as 0.6 GW/cm2 with a modulation depth ...
Baohao Xu   +9 more
doaj   +1 more source

The Investigation on Ultrafast Pulse Formation in a Tm–Ho-Codoped Mode-Locking Fiber Oscillator

open access: yesMolecules, 2021
We experimentally investigate the formation of various pulses from a thulium–holmium (Tm–Ho)-codoped nonlinear polarization rotation (NPR) mode-locking fiber oscillator.
Jingcheng Shang   +6 more
doaj   +1 more source

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