Prof. Roger A. Lewis Profile

Prof. Roger A. Lewis

at Univ of Wollongong

SPIE Involvement:

Author

Publications (7)

Proceedings Article | 7 December 2013 Paper

THz photomixer with a 40nm-wide nanoelectrode gap on low-temperature grown GaAs

G. Seniutinas, G. Gervinskas, E. Constable, A. Krotkus, G. Molis, G. Valušis, R. Lewis, S. Juodkazis

Proceedings Volume 8923, 892322 (2013) https://doi.org/10.1117/12.2033746

KEYWORDS: Terahertz radiation, Antennas, Electron beam lithography, Nanolithography, Electroluminescent displays, Plasmonics, Nanostructures, Gallium arsenide, Electrodes, Ion beams

Read Abstract +

Proceedings Article | 5 June 2010 Paper

Terahertz time-domain spectroscopy of nematic liquid crystals

E. Pogson, R. Lewis, M. Koeberle, R. Jakoby

Proceedings Volume 7728, 77281Y (2010) https://doi.org/10.1117/12.854810

KEYWORDS: Terahertz radiation, Liquid crystals, Refractive index, Birefringence, Molecules, Absorption, Reflectivity, Absorbance, Transmittance, Terahertz spectroscopy

Read Abstract +

Proceedings Article | 5 June 2010 Paper

Reconciling expressions for terahertz generation by bulk optical rectification

C. Bleasdale, R. Lewis

Proceedings Volume 7728, 77281X (2010) https://doi.org/10.1117/12.854802

KEYWORDS: Crystals, Polarization, Frequency conversion, Phase shifts, Dielectric polarization, Terahertz radiation, Zinc, Einsteinium, Nonlinear optics, Near infrared

Read Abstract +

Proceedings Article | 21 December 2007 Paper

Semiconductor terahertz emitters

S. Hargreaves, R. Lewis, M. Henini

Proceedings Volume 6798, 67980Y (2007) https://doi.org/10.1117/12.759349

KEYWORDS: Terahertz radiation, Gallium arsenide, Electrodes, Beryllium, Doping, Semiconductors, Signal detection, Resistance, Spectroscopy, Frequency conversion

Read Abstract +

Proceedings Article | 5 January 2006 Paper

The effect of barrier shape on thermionic refrigerator performance

M. O'Dwyer, T. Humphrey, R. Lewis, C. Zhang, K. Chao

Proceedings Volume 6035, 60350R (2006) https://doi.org/10.1117/12.638394

KEYWORDS: Resistance, Electron transport, Scattering, Phonons, Solid state electronics, Modulation, Superlattices, Energy efficiency, Physics, Interfaces

Read Abstract +

Proceedings Article | 5 January 2006 Paper

Conventional and total momentum filtered thermionic devices

M. O'Dwyer, T. Humphrey, R. Lewis, C. Zhang

Proceedings Volume 6035, 60351O (2006) https://doi.org/10.1117/12.638419

KEYWORDS: Electrons, Solid state electronics, Thermoelectric materials, Phonons, Optical filters, Digital filtering, Nanostructures, Interfaces, Energy efficiency, Quantum dots

Read Abstract +