| EPSRC Reference: |
GR/L95113/01 |
| Title: |
DIODE-ARRAY PUMPED SEMICONDUCTOR SLAB LASERS FOR HIGH POWER AND BRIGHTNESS |
| Principal Investigator: |
Penty, Professor R |
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| Department: |
Electrical and Electronic Engineering |
| Organisation: |
University of Bristol |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 May 1998 |
Ends: |
30 April 2001 |
Value (£): |
42,257
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| EPSRC Research Topic Classifications: |
| Optoelect. Devices & Circuits |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We propose to pump a semiconductor slab laser optically using a high power diode bar in order to realise a multiwatt diffraction-limited semiconductor source. Optically-pumped semiconductor lasers have particular advantages for power scaling; the vertical size of the laser mode is not restricted to the dimensions of a p-n junction, and with no requirement for doping, free carrier absorption loss is reduced allowing an increase of the active volume of the device. In this programme we will design and developa laser in which the gain region is a multiquantum well structure supporting a zig-zag totally-internally reflected mode with a large beam diameter (-200 microns) to relax the power constraint imposed by optical damage. This structure is pumped along the growth direction by the collimated beam from a diode bar laser. The programme joins complementary skills from two institutions; Southampton has expertise in the use of collimated diode bar output for laser pumping, resonator design, and planar optical geometries and Bristol contributes extensive knowledge of gain and lasing behaviour in semiconductor structures, including VCSELS which have features germane to the proposed device. Semiconductor structures will be grown at Sheffield and at Imperial College and fabricated at Bristol and Southampton.
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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.bris.ac.uk |