October/November 2009

Safety first

Stephen Mounsey looks into the requirements that laser safety equipment must meet, and takes a look at the various precautions that are available and advisable to laser users

Lithography lessons

Being able to engineer integrated circuits with higher transistor counts involves printing smaller structures. Photolithography, used in silicon chip fabrication, employs a variety of optical trickery to reduce the size of printed features, as Greg Blackman finds out

Super sensitive

Stephen Mounsey investigates photon counting, and discovers a rich variety of approaches to an old problem

The diode specialist

Warren Clark meets the team at Dilas, a company that has made a virtue of sticking to what it knows - laser diodes

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