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Details of Grant 

EPSRC Reference: GR/K60565/01
Title: MICROSCOPIC GAIN THEORY OF WIDE BANDGAP SEMICONDUCTORS
Principal Investigator: Galbraith, Professor I
Other Investigators:
Wherrett, Professor B
Researcher Co-Investigators:
Project Partners:
Department: Physics
Organisation: Heriot-Watt University
Scheme: Standard Research (Pre-FEC)
Starts: 01 April 1996 Ends: 31 March 1999 Value (£): 135,035
EPSRC Research Topic Classifications:
Condensed Matter Physics
EPSRC Industrial Sector Classifications:
Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
Semiconductor lasers in the blue spectral region would find diverse applications in data retrieval and storage, printing and subsea communications. A detailed understanding of the light emission in these compounds is an essential pre-requisite to the design and optimisation of such devices and is properly based on a time dependent, microscopic quantum theory of the optical and electronic processes. The advent of wide-band-gap lasers has brought to our attention a new inversion regime, consisting of a mixed exciton/electron/hole plasma. We will explore the equilibrium and dynamical properties of such a plasma and the resulting optical gain and absorption characteristics. We hope, by addressing the problem in a fundamental way, to elucidate many of the properties of this technologically important material system.
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Organisation Website: http://www.hw.ac.uk