applications and will challenge systems based on fiber lasers.”
While initial published results stated maximum pulse energies of 13. 4 μJ at pulse durations of 1. 36 ps (which exceeded previously reported values by a factor of seven), subsequent eleventh-hour increases to the pump spot size achieved energies up to 16 μJ at 54 W average power without any extraneous CW background. At average output powers below 8 W, Q-switching occurred. The group plans to announce the latest improved results of their research, which is supported by the by the German Federal Ministry of Education and Research, at the Conference on Lasers and Electro-Optics (CLEO) in San Jose, May 4– 9 (see www.cleo-conference.org).
Valerie C. Coffey
REFERENCES
1. J. Neuhaus et al., Optics Lett. 33 (April 1, 2008).
2. S. Marchese et al., Proc. CLEO-Europe 18, paper CF3-2, Optical Society of America, Washington D.C. (2007).
A major UK collaboration has borne fruit over a range of research areas. The Multidimensional Integrated Intelligent Imaging Project (Mi3) pooled the talents from 11 research centers (see below) to advance the performance and applications of active-pixel-sensor (APS) technology. Medical applications, including mammography and portal imaging, are at the forefront of those that have benefited from the project.
Started in June 2004, Mi3 runs until June 2008 and is supported by the U.K. Research Councils through a Basic Technology Programme grant of £ 4. 4 million (approximately US$9 million). The groups brought together in the project aimed to break the constraints of current scientific imaging in a range of applications. Advances in APS have been driven
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