Non-invasive laser spectroscopic analysis and characterization of novel
nanoscale materials with particular emphasis on those with potential photonic or
phononic device applications. The primary investigative techniques
employed include ultra-high resolution Brillouin light scattering spectroscopy,
Raman scattering spectroscopy and photoluminescence spectroscopy which,
collectively, provide detailed information on the elastic, structural and
optical properties of the target material. Systems of current interest include
2D semiconductors (transition metal dichalcogenides), topological insluators (bismuth and antimony chalcogenides), and
porous silicon-based heterostructures.
See my entry in MUN's Research Directory for more details.
Off-Axis Phonon and Photon Propagation in Porous Silicon Superlattices by Brillouin Spectroscopy and Optical
Reflectance L.C. Parsons and G.T. Andrews, J. Appl. Phys. 116, 033510 (2014).
Brillouin Scattering from Porous Silicon-Based Optical Bragg
Mirrors L.C. Parsons and G.T. Andrews, J. Appl. Phys. 111, 123521 (2012).
Systematic Brillouin Light Scattering Study of the Elastic
Properties of Porous Silicon Superlattices. A.M. Polomska-Harlick and G.T. Andrews, J. Phys. D: Appl.
Phys. 45, 075302 (2012).