Details of Grant 

EPSRC Reference:	GR/K68509/01
Title:	CONTROL OF ION IMPLANTED COLLOIDS FOR NON-LINEAR OPTICS AND RE LASERS
Principal Investigator:	Townsend, Professor P
Other Investigators:
Researcher Co-Investigators:
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Department:	Physics and Astronomy
Organisation:	University of Sussex
Scheme:	Standard Research (Pre-FEC)
Starts:	01 July 1995	Ends:	30 June 1997	Value (£):	133,809
EPSRC Research Topic Classifications:	Optical Devices & Subsystems
EPSRC Industrial Sector Classifications:
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Summary on Grant Application Form
There are two closely linked objectives which relate to understanding the physics of the formation and destruction of metal colloids formed by metal ion implantation in insulators. 1. Such colloids have been shown to have a power dependent refractive index. The first aim of this project is to optimise the non-linear response by controlling the colloid size. Initial examples were with Ag and Cu but this project will include other metals, specifically Ga, since this should exist as a liquid phase with potentially a greater optical sensitivity.2. Colloids are undesirable in the case of rare earth implants to form waveguide lasers. Our preliminary results indicate that eximer laser annealing, after thermal treatments, can eradicate some of the problems and hence the treatments will be to increase the RE luminescence intensity and lifetime.
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Organisation Website:	http://www.sussex.ac.uk