| EPSRC Reference: |
GR/L38127/01 |
| Title: |
UNCOOLED LASER DIODES FOR THE MID INFRA-RED |
| Principal Investigator: |
Dewar, Dr S |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
Cardiff University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1997 |
Ends: |
30 September 2000 |
Value (£): |
132,845
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| EPSRC Research Topic Classifications: |
| Optoelect. Devices & Circuits |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Manufacturing |
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| Panel History: |
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Summary on Grant Application Form |
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This project combines expertise at the Universities of Surrey and Cardiff in the design of the active regions and waveguides of strained-layer quantum well lasers to realise uncooled III-V lasers operating in the mid-IR, out to a wavelength of 6um. The structures will be grown at DRA Malvern and professor CT Elliot is the project co-ordinator. The novel elements are the use of strain-balanced quantum well structures grown on GaInSb substrates, and the examination of the reductions in Auger recombination rates in quantum wires and dots. Achievement of these aims will open new applications for mid-IR laser diodes, especially in sensing, environmental monitoring and defence. Work in Cardiff will focus on the optical properties of the devices. Optical loss by free carrier scattering will be calculated self consistently with gain calculations at Surrey and will be incorporated into the waveguide calculations. Detailed measurements of optical losses will be made to verify the calculations and to design improved structures. These calculations will then be used to design optimised quantum wire and dot structures, in collaboration with Surrey, with the objective of achieving significant reductions in Auger recombination rates to enable uncooled operation to be achieved.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cf.ac.uk |