Generalized Electrical Substitution Methods and Detectors for Absolute Optical Power Measurements.

ABSTRACT: We have developed generalized methods for electrical substitution optical measurements, as well as cryogenic detectors which can be used to implement them. The new methods detailed here enable measurement of arbitrary periodic waveforms by an electrical substitution radiometer (ESR), which means that spectral and dynamic optical power can be absolutely calibrated directly by a primary standard detector. Cryogenic ESRs are not often used directly by researchers for optical calibrations due to their slow response times and cumbersome operation. We describe two types of ESRs with fast response times, including newly developed cryogenic bolometers with carbon nanotube absorbers, which are manufacturable by standard microfabrication techniques. These detectors have response times near 10 ms, sp

SUBMITTER: Woods SI 

PROVIDER: S-EPMC9890396 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature