| EPSRC Reference: |
GR/N23219/01 |
| Title: |
DEVELOPMENT OF ALL-OPTICAL HIGH POWER TERAHERTZ SOURCES |
| Principal Investigator: |
Linfield, Professor EH |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Physics |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 January 2001 |
Ends: |
29 June 2004 |
Value (£): |
217,365
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Synthesis & Growth |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We will develop a high power, all-optical pulsed source of coherent Thz radiation. Such sources are potentially of considerable importance for coherent imaging (eg in the dental, medical and electronics industries) and spectroscopy (eg for environmental monitoring). The ultimate goal is routine generation of coherent THz radiation approaching mW power levels using novel semiconductor structures.Our unique MBE facility provides us with distinct opportunities to tailor the electronic band structure ina range of semiconductor heterostructures. We will optimise the electric field profile and material characteristics responsible for the surface emission generation of THz pulses using excitation with sub-100fs pulses of visible light. Our principal aim will be to investigate and exploit the dramatic surface emission enhancement in a magnetic field, which we have recently identified.The high power sources obtained will form the foundation for a coherent imaging and spectroscopy system. Pixel-by-pixel time and frequency dependent spetra will be obtained, allowing the construction of compositional images. We will specifically investigate the contrast mechanisms obtained in two demonstrator medical projects.
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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.cam.ac.uk |