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Date: 2016
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1199895
Description: The ability of curved gratings as sectors of concentric circular gratings to couple linearly polarised light into focused surface plasmons is investigated by theory, simulation, and experiment. The ex ... More
Reviewed: Reviewed
Date: 2016
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1200214
Description: We developed a novel dopamine sensing and measurement technique based on aggregation of gold nanoparticles in random lasers. Dopamine combined with copper ions triggers the aggregation of gold nanopar ... More
Reviewed: Reviewed
Date: 2016
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1201467
Description: We investigate the effect of different gain media and different scattering media in random lasers. We demonstrate an increase in the emission intensity and efficiency of random lasing by incorporating ... More
Reviewed: Reviewed
Date: 2016
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1199941
Description: We demonstrate long-wavelength operation (>700 nm) of random dye lasers (using a methylene blue dye) with the addition of rhodamine 6G and titania, enabled by radiative and non-radiative energy transf ... More
Reviewed: Reviewed
Date: 2016
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1249793
Description: A random laser is demonstrated in a hollow-core photonic-crystal optical fibre, with dye solution and dielectric or metallic nanoparticles. The threshold is significantly reduced compared with the bul ... More
Reviewed: Reviewed
Date: 2015
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1067443
Description: We demonstrate the effect of fluorescence resonance energy transfer on the emission spectra and threshold of Rhodamine 6G / methylene blue / titania random lasers. Rhodamine 6G enhances the laser emis ... More
Reviewed: Reviewed
Date: 2015
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/357528
Description: We demonstrate improved characteristics in Rhodamine dye random lasers with the addition of gold nanoparticles. As a result of the strong plasmonic enhancement induced by gold nanoparticles, Rhodamine ... More
Reviewed: Reviewed
Date: 2015
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/1054856
Description: Rhodamine 6G random dye lasers are more efficient with ruby nanocrystal scatterers than with alumina, exhibiting reduced threshold despite the increased absorption of ruby nanocrystals.
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/318963
Description: We propose and demonstrate a 1064- and 1085-nm dual-wavelength coupled-cavity Nd:YVO4laser by exploiting two dielectric Fabry-Perot bandpass filters as laser output couplers. A fiber-pigtailed 808-nm ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/318026
Description: A parametric study of an adiabatic passage coupler transiting through a plasmon-like intermediate state is studied. High fidelity transport is demonstrated, despite plasmonic-like losses and phase mis ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/331865
Description: Surface plasmons have been launched from free space optical beams (at an excitation wavelength of 700 nm) and focused in the plane using concentric curved gratings (or plasmonic lenses) etched into 30 ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/318338
Description: Plasmonics improves the performance of random lasers by increasing the gain for the system. Random lasers with gold nanoparticles produce higher emission intensity, smaller emission linewidth, lower t ... More
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/338637
Description: Time-gated luminescence microscopy using long-lifetime molecular probes can effectively eliminate autofluorescence to enable high contrast imaging. Here we investigate a new strategy of time-gated ima ... More
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Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/328304
Description: We investigated the spectral and coherence signatures of threshold in random lasers with incoherent feedback consisting of alumina colloidal nanoparticles suspended in rhodamine 6G methanol solution u ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/288149
Description: By controlling the size of Yb,Er, doped upconversion nanoparticles, we obtain varying emission lifetimes and emission ratios of green and red light, which we explain by modelling of excited state deca ... More
Reviewed: Reviewed