| EPSRC Reference: |
GR/L89884/01 |
| Title: |
SELF-PULSATION IN VCSEL'S |
| Principal Investigator: |
Adams, Professor M |
| Other Investigators: |
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| Department: |
Physics |
| Organisation: |
University of Essex |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1998 |
Ends: |
31 January 2001 |
Value (£): |
84,259
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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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This proposal addresses the question of how to induce self-pulsation in vertical cavity surface-emitting lasers (VCSEL's), building on the knowledge available from experience with edge-emitting self-pulsating laser diodes. The proposed research is in two parts: 1) to apply the theory of SPLD's using saturable absorbers to VCSEL structures, and 2) to assess the feasibility of a dispersively Q-switched VCSEL by the use of detuned Bragg stacks within the standard VCSEL structure.For item 1) the proposed research will be based on a semi-analytical large-signal model which has been developed from the PI for self-pulsation in laser diodes containing saturable absorbers. The effects on self-pulsation of microcavities and nonlinear gain and refraction in VCSEL's will be investigated, and the analytic model results will be compared with those from numerical simulation.For item 2) the theory will be extended to include dispersive feedback from an additional Bragg reflector which is grown on top of the usual VCSEL structure, and arranged to be detuned with respect to the other Bragg stacks. Tolerances and design issues for this technology will be assessed.
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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.sx.ac.uk |