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Details of Grant 

EPSRC Reference: GR/R74154/01
Title: Multi-Layer and Multi-Channel Waveguide Lasers fabricated by Pulsed-Laser-Deposition
Principal Investigator: Eason, Professor RW
Other Investigators:
Shepherd, Professor DP
Researcher Co-Investigators:
Project Partners:
Swiss Federal Institute of TEC
Department: Optoelectronics Research Ctr (closed)
Organisation: University of Southampton
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 2001 Ends: 30 September 2003 Value (£): 187,077
EPSRC Research Topic Classifications:
Optical Devices & Subsystems
EPSRC Industrial Sector Classifications:
Pharmaceuticals and Biotechnology Communications
Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
Describe the proposed research in about 200 words.Pulsed-laser deposition is a fast and versatile method for fabrication of high-quality thin films. The ORC team have previously demonstrated the first waveguide lasers based on PLD-grown thin films, and in this proposal we aim to develop advanced waveguide structures whose added functionality bring them much closer to real applications. Firstly, channel waveguide arrays will be fabricated In PLD-grown Ti:sapphire thin films and, through collaboration with SFIT, they will be used as broadband coherent sources for optical coherence tomography (OCT). The combination of large bandwidth, directionality, power and simplicity of these sources has considerable interest for workers in this field. The fabrication of the channel guides will involve an investigation of etching and overlay growth based on the basic PLD-grown sapphire thin films. We will also demonstrate laser operation of such arrays, where the guided geometry should lead to efficient and low threshold devices with the potential for broad tuning and femtosecond pulse generation. Finally, will also demonstrate novel multi-layer gamet-on-sapphire waveguide structures in order to produce the planar analogue of the large-mode-area (LIVIA) and claddingpumped LIVIA wavguide designs previously used in optical fibres. These waveguides will be applied to the area of high-power diode-end-pumped lasers with the aim of producing simple compact sources of near-diffraction-limited beam quality at powers of >10W.
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Organisation Website: http://www.soton.ac.uk