Dr Steve Andrews
Profile
Biographical Information
- Senior lecturer, University of Bath 1994-
- Royal Society Industrial Fellow, University of Cambridge 1992-4
- Senior Research Scientist, GEC-Marconi Hirst Research Laboratories 1985-1992
- Research Associate, University of Edinburgh 1982-5
- DPhil (Oxford) 1982
- MA (Oxford) 1979
Research Interests
My current research interests are in ultrafast phenomena in condensed matter, instrument development, nanofabrication and computer modeling. The work of my group is typified by experimental studies of materials and devices using femtosecond pump-probe techniques. In particular, we use a particular specialization of this method known as time domain terahertz (THz) spectroscopy. We have used this technique to study the dynamics of electrons, phonons and plasmons in semiconductor nanostructures and the propagation of light on microstructured metal-dielectric surfaces. We have also developed an ultrabroadband and polarization sensitive THz spectrometer and a fibre coupled THz near field microscope. Current or planned projects involve near THz field imaging of microstructured waveguides, establishing techniques to measure THz circular dichroism in biomaterials, the development of a cheap THz instrument for assessing drought stress in crops, THz electro-chemical sensing and femtosecond studies of graphene.
Publications
Misra, M., Pan, Y., Williams, C.R., Maier, S.A. and Andrews, S.R., 2013. Characterization of a hollow core fibre-coupled near field terahertz probe. Journal of Applied Physics, 113 (19), 193104.
Misra, M., Andrews, S. R. and Maier, S. A., 2012. Waveguide artefacts in terahertz near field imaging. Applied Physics Letters, 100 (19), 191109.
Hussain, A. and Andrews, S. R., 2010. Absence of phase-dependent noise in time-domain reflectivity studies of impulsively excited phonons. Physical Review B, 81 (22), 224304.
Williams, C., Misra, M., Andrews, S. R., Maier, S. A., Carretero-Palacios, S., Rodrigo, S. G., Garcia-Vidal, F. J. and Martin-Moreno, L., 2010. Dual band terahertz waveguiding on a planar metal surface patterned with annular holes. Applied Physics Letters, 96 (1), 011101.
Hussain, A. and Andrews, S. R., 2008. Ultrabroadband polarization analysis of terahertz pulses. Optics Express, 16 (10), pp. 7251-7257.
Ding, W., Andrews, S. and Maier, S. A., 2008. Modal coupling in surface-corrugated long-period-grating fiber tapers: erratum. Optics Letters, 33 (9), p. 1007.
Ding, W. and Andrews, S., 2008. Modal coupling in surface-corrugated long-period-grating fiber tapers. Optics Letters, 33 (7), pp. 717-719.
Williams, C. R., Andrews, S. R., Maier, S. A., Fernández-Domínguez, A. I., Martín-Moreno, L. and García-Vidal, F. J., 2008. Highly confined guiding of terahertz surface plasmon polaritons on structured metal surfaces. Nature Photonics, 2 (3), pp. 175-179.
Fernandez-Dominguez, A. I., Martin-Moreno, L., Garcia-Vidal, F. J., Andrews, S. R. and Maier, S. A., 2008. Spoof Surface Plasmon Polariton Modes Propagating Along Periodically Corrugated Wires. IEEE Journal of Selected Topics in Quantum Electronics, 14 (6), pp. 1515-1521.
Fernández-Domínguez, A. I., Williams, C. R., García-Vidal, F. J., Martín-Moreno, L., Andrews, S. R. and Maier, S. A., 2008. Terahertz surface plasmon polaritons on a helically grooved wire. Applied Physics Letters, 93 (14), 141109.
