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Details of Grant 

EPSRC Reference: GR/S27535/01
Title: silicon-Based Infra Red Lasers Using Si/SiGe Quantum Cascades
Principal Investigator: Paul, Professor DJ
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Physics
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 01 June 2004 Ends: 31 May 2007 Value (£): 160,316
EPSRC Research Topic Classifications:
Materials Synthesis & Growth Optical Devices & Subsystems
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors Electronics
Related Grants:
GR/S27542/01 GR/S27511/01 GR/S27528/01
Panel History:  
Summary on Grant Application Form
Quantum cascade lasers (QCLs) based on III-V heterostructures have proved enormously successful as solid state radiation sources covering a wide reinfrared wavelengths (from 3 to 24 microns). A QCL operating in the THz band (4.4 THz, with a power output of serveral mW at 4K) has also been demc QCL operation does not involve interband recombination, and therefore the concept is readily transferable to the SUSiGe material system. A SUSiGe QCI therefore represents one of the most promising technological routes to realisation of a silicon-based laser. Recent work by members of this consortium I shown that high quality SUSiGe quantum cascade heterostructures (of up to 100 periods to date) can be grown on virtual substrates. This project incorpo research expertise in silicon-on-silicide-on-insulator (SSOI) technology to develop silicon-based laser cavity structures and hence realise both edge arc emitting SUSiGe quantum casacde lasers.
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Organisation Website: http://www.cam.ac.uk