Contact: Ben Stein
bstein@nist.gov
301-975-3097
National Institute of Standards and Technology (NIST)

A Sub-femtosecond Stop Watch for ‘Photon Finish’ Races

Caption: Diagram of two stack configurations with odd numbers of layers. Blue layers have a high index of refraction, white layers a low. The stacks are nearly identical with the exception of where the extra layer is deposited.

Credit: NIST

Usage Restrictions: None

Related news release: A sub-femtosecond stop watch for 'photon finish' races