Tag Archives: Tess Reynolds

Generating whispering gallery mode spectra

9 March 2017:

A new publication from CNBP researchers (lead author Jonathan Hall pictured) presents a new model for generating whispering gallery mode spectra for multilayer microspheres.

The work has just been reported in the journal ‘Optics Express’ and is accessible online.

Journal: Optics Express.

Title: Unified theory of whispering gallery multilayer microspheres with single dipole or active layer sources.

Authors: Jonathan M. M. Hall, Tess Reynolds, Matthew R. Henderson, Nicolas Riesen, Tanya M. Monro, and Shahraam Afshar.

Abstract: The development of a fast and reliable whispering gallery mode (WGM) simulator capable of generating spectra that are comparable with experiment is an important step forward for designing microresonators. We present a new model for generating WGM spectra for multilayer microspheres, which allows for an arbitrary number of concentric dielectric layers, and any number of embedded dipole sources or uniform distributions of dipole sources to be modeled. The mode excitation methods model embedded nanoparticles, or fluorescent dye coatings, from which normalized power spectra with accurate representation of the mode coupling efficiencies can be derived. In each case, the emitted power is expressed conveniently as a function of wavelength, with minimal computational load. The model makes use of the transfer-matrix approach, incorporating improvements to its stability, resulting in a reliable, general set of formulae for calculating whispering gallery mode spectra. In the specific cases of the dielectric microsphere and the single-layer coated microsphere, our model simplifies to confirmed formulae in the literature.

Youth ANZAAS visits CNBP in Adelaide

cnbplogosquare19 July 2015:

CNBP researchers Roman Kostecki, Georgios Tsiminis , Mel McDowall, Peipei Jia, Erik Schartner and Tess Reynolds were happy to host a visiting Youth ANZAAS tour at their laboratories at the University of Adelaide on July 9th, 2015.

Youth ANZAAS  (organised by the Australian and New Zealand Association for the Advancement of Science)  is an annual residential international forum for science students in Years 10 to 12. Every year, students from each State and Territory are selected to participate in science activities and experiences over a period of a week.

These high achieving students with eager minds were excited to be shown around the working CNBP laboratories, and learnt more about the research that is being undertaken by the Centre, from the lectures  that each researcher provided.

SPIE West in San Francisco

7-12 February 201Alexandre Francois Low Res Edit 00835: Conference Presentations

Dr Alex Francois and PhD students Tess Reynolds and Jonathan Hall presented three papers at SPIE West

Jonathan Hall, Shahraam Afshar, Matthew Henderon, Alexandre Francois, Tess Reynolds, Nicolas Riesen and Tanya Monro, “Predicting the whispering gallery mode spectra of microresonators,” SPIE LASE, 9343-71 (2015)

Reynolds, A. Francois, M.R. Henderson, S.J. Nicholls, T.M Monro “Optimization of Whispering Gallery Mode sensor design for applications in biosensing,” SPIE BIOS, 9315-19  (2015)

Alexandre François, Nicolas Riesen, Hong Ji, Shahraam Afshar Vahid, Tanya M. Monro “Whispering-gallery mode lasers for biosensing: Reducing the lasing threshold,” SPIE LASE, 9343-66 (2015)