August/September 2020

Fibre lasers channel the and amplify the light through a fibre optic cable

Design for life

Keely Portway takes a look at some of the latest developments in optical fibre design for fibre lasers

In deflectometry, a camera images fringe patterns that have reflected off a surface under test, so that a system can deduce a map of the surface slopes from the deviation of the projected fringes, and from that determine the surface shape. Credit: Mahr

Getting the measure of aspheric and freeform lenses

Lens features have been getting too small to properly characterise – but metrology providers are catching up, finds Andy Extance

Many university laboratories using lasers have had to shut down temporarily following a visit from an HSE inspector

Shaping up on laser safety

Matthew Dale learns how the safety knowledge of the laser community is not yet fully up to scratch

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