Details of Grant 

EPSRC Reference:	GR/L67059/01
Title:	MICROSCOPIC THEORY OF INTERSUBBAND SCATTERING IN SEMICONDUCTOR QUANTUM WELLS
Principal Investigator:	Galbraith, Professor I
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department:	Physics
Organisation:	Heriot-Watt University
Scheme:	Standard Research (Pre-FEC)
Starts:	01 January 1998	Ends:	31 March 2000	Value (£):	95,533
EPSRC Research Topic Classifications:	Materials Characterisation
EPSRC Industrial Sector Classifications:	No relevance to Underpinning Sectors
Related Grants:
Panel History:
Summary on Grant Application Form
The quantum cascade laser is a new far-infra-red semiconductor laser based on electronic transistors between energy levels created by quantum confinement. The production of such an inversion is a delicate balance amongst the electron and phonon energy distributions and scattering rates. The most important of these are electron-electron and electron-phonon scattering and quantitative description is required to understand and optimise the behaviour of these new devices. Such a description is properly based on their microscopic, many-body interactions and our objective is to use many-body techniques to provide a complete model of electronic scattering processes in semiconductor quantum wells which determine the carrier distribution functions and hence the optical properties.
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Organisation Website:	http://www.hw.ac.uk