Roger Lewis is an active researcher in the area of terahertz science and technology. (The terahertz region of the electromagnetic spectrum falls between the infrared and microwaves.) He is sole chief investigator (CI) on a 2006-2008 Australian Research Council (ARC) Discovery Project, 'High efficiency terahertz emitters'. He is lead CI in a 2007-2009 ARC International Linkage project, 'Advanced materials and structures for terahertz science and technology'. He was lead CI in two recent ARC Linkage Infrastructure and Equipment grants to set up terahertz time-domain spectroscopy (2004) and terahertz two-colour mixing (2006) facilities at Wollongong. In 2007 he was invited to speak on candidate terahertz emitters at international conferences in London, Chisinau and Canberra. He is a Fellow of the Australian Institute of Physics and a Fellow of the Royal Microscopical Society. Professor Lewis is also an accomplished teacher, as recognised by a Vice-Chancellor's Award for Outstanding Contribution to Teaching and Learning, The NSW Minister for Education and Training & The Australian College of Educators Quality Teaching Award, and a Carrick Citation. He is a member of the American Association of Physics Teachers, the Australasian Association for Engineering Education, and the Australian College of Educators. Professor Lewis is also active in academic governance. He was Head of the School of Engineering Physics at the University of Wollongong 2002-2007 and is currently the Chair of the Faculty of Engineering Research Committee. For further information refer to Professor Lewis' faculty page.
Articles
Physical Phenomena in ElectronicMaterials in the Terahertz Region, Faculty of Engineering - Papers (2007)
Terahertz radiation is a powerful probe of materials’ properties, because many materials have characteristic energies...
Magnetopolaron interactions in n-type indium phosphide (with P. E. Simmonds and Y. J. Wang), Faculty of Engineering - Papers (2005)
Broadband far-infrared absorption spectroscopy is used to investigate n-type indium phosphide in magnetic fields of...
Strong terahertz emission from (100) p-type InAs (with R. Mendis, M. L. Smith, L. J. Bignell, and R. Vickers), Faculty of Engineering - Papers (2005)
Terahertz emission has been observed from (100) Zn-acceptor-doped InAs under illumination by fs pulses of...
Electronic efficiency in nanostructured thermionic and thermoelectric devices (with M. F. O'Dwyer, C. Zhang, and T. E. Humphrey), Faculty of Engineering - Papers (2005)
Advances in solid-state device design now allow the spectrum of transmitted electrons in thermionic and...
Infrared-active phonons of perovskite HoMn/sub 1-x/Co/sub x/O/sub 3/ (x=0--0.8) (with F. Gao, X. L. Wang, and M. M. Farhoudi), Faculty of Engineering - Papers (2005)
Polycrystalline perovskites compounds HoMn/sub 1-x/Co/sub x/O/sub 3/ (x=0--0.8) have been prepared by conventional solid-state reaction....
Presentations
THz Emission from Mercury Cadmium Telluride Films Grown on Cadmium Zinc Telluride Substrates (with R. Mendis, M. L. Smith, R. E. Vickers, and C. Zhang), Faculty of Engineering - Papers (2006)
We have observed THz emission from single- and double-layer HgCdTe (MCT) films epitaxially grown on...
Power generation with nanowire resonant tunneling thermoelectrics (with M. F. O'Dwyer, H. Linke, E. Hoffmann, T. E. Humphrey, and C. Zhang), Faculty of Engineering - Papers (2006)
Nanowires have been predicted to yield significantly improved thermoelectric figures of merit. Here we describe...
Terahertz Emission from (100) p-InA (with M. L. Smith, R. Mendis, and R. E. M. Vickers), Faculty of Engineering - Papers (2005)
Terahertz emission from (100) p-type InAs illuminated by ultrafast near-infrared pulses is investigated. A two-fold...
The effect of the electron energy spectrum on electronic efficiency and power in thermionic and thermoelectric devices (with M. F. O'Dwyer, T. E. Humphrey, and C. Zhang), Faculty of Engineering - Papers (2005)
We show that the details of the energy spectrum of transmitted electrons in thermionic and...
Infrared-active phonons of HoMn/sub 1-x/Co/sub x/O/sub 3/ (x = 0-0.8) (with F. Gao, X. L. Wang, M. Farhoudi, and S. X. Dou), Faculty of Engineering - Papers (2005)
Polycrystalline HoMn/sub 1-x/Co/sub x/O/sub 3/ was synthesized by solid-state reaction. The infrared active phonons of...