Laser sight

Published: Friday 30 June 1995

Scientists are now using lasers to control the optical properties of gases. This technique has applications in many areas including high- sensitivity microscopy and ultra sensitive magnetometers (Nature, Vol 374, No 6524). Researchers using a laser with rubidium vapour have demonstrated an enhancement of the refractive index - a measure of how much a light beam bends upon entering a medium - of gases with only a low loss of intensity.

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