| EPSRC Reference: |
GR/L34563/01 |
| Title: |
FOCUSSED ION BEAM ETCHING FOR NEW LASER DIODE CONSTRUCTION, MODIFICATION AND POST-PROCESSING (FIELD) |
| Principal Investigator: |
White, Professor I |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Electrical and Electronic Engineering |
| Organisation: |
University of Bristol |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1997 |
Ends: |
31 December 1997 |
Value (£): |
116,912
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| EPSRC Research Topic Classifications: |
| Optoelect. Devices & Circuits |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Communications |
| Electronics |
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Summary on Grant Application Form |
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This joint proposal, between the Universities of Bristol and St. Andrews University, aims to develop a facility for post-processing laser diodes so that new structures can be constructed for a wide range of applications. By using a high performance focused ion beam gun system with integral mass and optical spectrometers for in-situ etch monitoring, it is proposed to modify high quality commercial laser chips, for example by fabricating shaped partial or complete internal mirrors, gratings or selective lenses while the device performance is being monitored. The approach allows excellent control of etch in all three space dimensions thus enabling fully profiled etching so that new types of device may be constructed where previously the design tolerances were regarded as being too tight for feasible fabrication. The main focus of the work will be on high power and short pulse lasers although user related work will be relevant to advances in beam control and functionality. In particular the project will study;i) high power MOPA lasers with novel etched facets rather than distributed gratings,ii) shaped mirrors and guides for high beam quality from laser arrays,iii) novel diodes laser coupled cavities for short pulse generation andiv) techniques for controlling the beam shape from diode lasers for coupling into optical fibres, semiconductor waveguides and mode-matching in all-solid-state minilasers.
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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 |