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Details of Grant 

EPSRC Reference: GR/M43395/02
Title: ROPA: FRACTAL LASER PATTERNS
Principal Investigator: Padgett, Professor M
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: School of Physics and Astronomy
Organisation: University of Glasgow
Scheme: ROPA
Starts: 01 April 1999 Ends: 31 July 2000 Value (£): 62,265
EPSRC Research Topic Classifications:
Lasers & Optics
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
Lasers are encountered throughout science and engineering. In most cases, the output beams have simple intensity distributions best described by Hermite-Gaussin or similar polynomials.We identified that it may be possible to design a laser with an output that has a fractal cross-section (e.g. Sierpinski Gasket). The key intracavity component is a computer-generated hologram that increases the fractal dimension of the intensity profile upon each round trip of the cavity. The smallest feature is limited only by the wavelength of the light and not the scale of the hologram.Although this research is principally curiosity driven, such a laser may have applications in photolithography where aerials are no made with fractal patterns for mobile phones.
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Organisation Website: http://www.gla.ac.uk