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Numerical investigation of self-pulsation for narrow stripe A1GaAs/GaAs and InGaAsP/InP semiconductor laser diodes
(Trinity College (Dublin, Ireland). School of Physics, 2004)
Self-pulsation in laser diodes is the process by which pulsed light is emitted from the laser while under direct current injection. As a result of their low relative intensity noise under feedback conditions, and high ...
The creation and annihilation of optical vortices using cascade conical diffraction
(2011)
Internal conical diffraction produces a superposition of orthogonally polarised zero- and first-order Bessel like beams from an incident circularly polarised Gaussian beam. For right-circularly polarised light, the first-order ...
The Hubble Deep Field South: STIS imaging
(American Astronomical Society, 2000)
We present the imaging observations made with the Space Telescope Imaging Spectrograph (STIS) of the Hubble Deep Field South. The field was imaged in four bandpasses: a clear CCD bandpass for 156 ks, a long-pass filter for ...
Many particle magnetic dipole-dipole and hydrodynamic interactions in magnetizable stent assisted magnetic drug targeting
(2010)
The implant assisted magnetic targeted drug delivery system of Avil?es, Ebner and Ritter is considered both experimentally (in vitro) and theoretically. The results of a 2D mathematical model are compared with 3D experimental ...
Ag nanoparticle decorated graphene oxide: Fluorescence quenching and surface enhanced raman scattering
(2016)
The emission and Raman scattering properties of three dyes, Rhodamine 6G (R6G), Rhodamine B (RhB) and Sulforhodamine 101 (SR101), were characterised on graphene oxide (GO) and Ag nanoparticle (NP) decorated graphene oxide ...
Data-driven magnetic materials inverse design
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)
Magnetic materials have diverse applications across multiple sectors, ranging from magnetic resonance imaging machines, used to detect diseases, to electric motors, sensors, and wind turbines just to name a few. The demand ...
Sensitive, high-strain, high-rate bodily motion sensors based on graphene-rubber composites
(2014)
Monitoring of human bodily motion requires wearable sensors which can detect position, velocity and acceleration. They should be cheap, lightweight, mechanically compliant and display reasonable sensitivity at high strains ...
Wide range thermal and athermal operation of slotted surface grating lasers
(2021)
Athermalisation is a procedure in which the wavelength of a semiconductor laser
remains unchanged even as the temperature is altered. This is achieved by altering the currents
that flow through the laser so as to maintain ...
Magnetoresistance and electrical hysteresis in stable half-metallic (La0.7Sr0.3 MnO3 and Fe3O4 nanoconstrictions
(American Institute of Physics, 2005)
We have studied the transport properties of mechanically stable Fe3O4 and La0.7Sr0.3MnO3
nanoconstrictions patterned by focused ion-beam milling. The magnetoresistance decreases with the
square of the applied voltage and ...