NIST 'Combs' the Atmosphere to Measure Greenhouse Gases (IMAGE)

National Institute of Standards and Technology (NIST)

NIST 'Combs' the Atmosphere to Measure Greenhouse Gases

Caption

Photo illustration of NIST experiment using a pair of laser frequency combs (depicted as rainbow-colored cartoons) to detect the simultaneous signatures of several 'greenhouse' gases along a 2-kilometer path between a NIST laboratory roof and a nearby mesa. Each comb 'tooth' represents a different frequency of light. To identify gases in the atmosphere, researchers measured the amount of comb light absorbed at different frequencies along the path.

Credit

Burrus and Irvine/NIST

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