Browsing by Author "BRADLEY, LOUISE"
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Acceptance angle influence on optimum incident spot size for high-finesse microcavity two-photon absorption photodetectors
BRADLEY, LOUISE; GUO, WEI-HUA; DONEGAN, JOHN (2009)The influence of the limited acceptance angle of a high-finesse microcavity two-photon absorption photodetector on its response has been investigated. It is shown that the limited acceptance angle of the microcavity ... -
Direct measurement of a high-speed (>100Gbit/s) OTDM data signal utilising two-photon absorption in a semiconductor microcavity
DONEGAN, JOHN; BRADLEY, LOUISE (2005)The future development of high-speed optical data channels, operating at individual data rates in excess of 100Gbit/s, will require a sensitive and ultra-fast method for pulse measurement [1]. Current high-speed signals ... -
Emission Properties of Colloidal Quantum Dots on Polyelectrolyte Multilayers
BRADLEY, LOUISE; GOUNKO, IOURI; RAKOVICH, YURY (2006)We present steady state and time-resolved photoluminescence (PL) characteristics of differently charged CdTe quantum dots (QDs) adsorbed onto a polyelectrolyte (PE) multilayer. The PE multilayer is built up using a ... -
Experimental investigation of polarisation rotation in semiconductor optical amplifiers
BRADLEY, LOUISE; Kennedy, B. F.; Philippe, S.; Landais, P.; Soto, H. (IEEE, 2004)An experimental study of polarisation rotation in a semiconductor optical amplifier is presented. Two techniques are used to investigate the gain and birefringence along the two eigenmodes of the component waveguide, with ... -
Fine structure of coupled optical modes in photonic molecules
RAKOVICH, YURY; BRADLEY, LOUISE (2004)We report on the coherent coupling of whispering gallery modes (WGM) in a photonic molecule formed from two melamine-formaldehyde spherical microcavities with a thin shell of CdTe nanocrystals. Utilizing a microporous ... -
Growth of CuCl thin films by magnetron sputtering for ultraviolet optoelectronic applications
BRADLEY, LOUISE (2006)Copper (I) chloride (CuCl) is a potential candidate for ultraviolet (UV) optoelectronics due to its close lattice match with Si (mismatch less than 0.4%) and a high UV excitonic emission at room temperature. CuCl thin films ... -
Highly efficient Forster resonance energy transfer between CdTe nanocrystals and two different dye molecules
DONEGAN, JOHN; RAKOVICH, YURY; BRADLEY, LOUISE; GOUNKO, IOURI (2004)We report highly efficient Forster resonance energy transfer between CdTe nanocrystals and two different dyes, Rhodamine B and Oxazine, where the nanocrystals are mixed with the dyes on top of glass substrates. A faster ... -
Interaction of surface plasmons with CdTe quantum dot excitons
DONEGAN, JOHN; RAKOVICH, YURY; BRADLEY, LOUISE; LUNNEY, JAMES (SPIE, 2005)A 5-fold enhancement in the luminescence of CdTe nanocrystal quantum dots (QDs) is observed when they are placed in proximity to a nanostructured Au film deposited by pulsed laser deposition technique. No enhancement is ... -
Metal surface enhanced emission from CdTe quantum dots
BRADLEY, LOUISE; DONEGAN, JOHN FRANCIS; RAKOVICH, YURY (IEEE, 2005)In this paper the enhancement in emission from CdTe quantum dots (QDs) on Au island film as a function of CdTe-Au distance is reported. The observed enhancement can be partially explained by increased absorption cross ... -
Nanoplasmonic Sensing at the Carbon-Bio Interface: Study of Protein Adsorption at Graphitic and Hydrogenated Carbon Surfaces
COLAVITA, PAULA; BRADLEY, LOUISE (2017) -
Off-resonance surface plasmon enhanced spontaneous emission from CdTe quantum dots
BRADLEY, LOUISE; RAKOVICH, YURY; GOUNKO, IOURI (2006)Surface plasmon (SP) enhanced photoluminescence (PL) from CdTe quantum dots (QDs) on monolayers of Au nanoparticles is investigated under both resonant and nonresonant conditions. Enhancement of the QD PL intensity is ... -
OSNR monitoring using two fiber interferometers
GUO, WEI-HUA; BRADLEY, LOUISE (2010)In-band OSNR from 5 to 30 dB of a single 10 G NRZ-OOK channel was measured by two fiber interferometers within an accuracy of ±0.5 dB without requirement for knowledge of the noise-free extinction ratio of the signal.