ChipScale

This project is focused on developing a more robust linkage to the revised SI candela for optical power measurements. The novel combination of two independent primary standard detectors: a solid-state predictable quantum efficient detector (PQED) and a cryogenic electrical substitution radiometer will be used to create a robust link to the revised SI by measuring the fundamental constant ratio e/h. The novel packaging of the two standards will facilitate improved dissemination of optical quantities, generating for the first time an “NMI-on-a-chip” for optical power measurements.