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Details of Grant 

EPSRC Reference: GR/M46983/01
Title: QUANTUM CASCADE EMISSION DEVICES FOR IR OPTICAL SENSING
Principal Investigator: Cockburn, Professor J
Other Investigators:
Ironside, Professor CN Krauss, Professor T Magill, Dr J
De La Rue, Honorary Professor R Stanley, Professor C Skolnick, Professor M
Hutchings, Professor DC
Researcher Co-Investigators:
Project Partners:
Edinburgh Sensors Ltd GEC
Department: Physics and Astronomy
Organisation: University of Sheffield
Scheme: Standard Research (Pre-FEC)
Starts: 01 February 2000 Ends: 31 October 2002 Value (£): 72,722
EPSRC Research Topic Classifications:
Optoelect. Devices & Circuits
EPSRC Industrial Sector Classifications:
Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
This proposal is for an applications-driven research programme into a novel class of infra-red emitters based on intersubband transitions, utilising a quantum cascade (QC) configuration, in the wide-gap III-V system InGaAs-InAlAs. We have recently demonstrated QC lasers at 5.2 and 4.6 um in this material system. We shall combine our expertise in high precision MBE growth and semiconductor laser design and fabrication with work on photonic microstructures to improve and adapt quantum cascade laser technology for sensor applications. Objectives include room temperature operation at =10.5 um of QC laser with power levels in the milliWatt range for the detection of Ethylene. High source spectral brightness an new sensor formats, such as intra-cavity absorption spectroscopes will allow us to reach the required detection limit of 100 part per billion.
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Organisation Website: http://www.shef.ac.uk