Vaskuri Anna K, Stephens Michelle S, Tomlin Nathan A, Spidell Matthew T, Yung Christopher S, Walowitz Andrew J, Straatsma Cameron, Harber David, Lehman John H
Opt Express. 2021 Jul 5;29(14):22533-22552. doi: 10.1364/OE.427597.
We have developed a planar absolute radiometer for room temperature (PARRoT) that will replace the legacy C-series calorimeter as the free-space continuous-wave laser power detector standard at the National Institute of Standards and Technology (NIST). This instrument will lower the combined relative expanded measurement uncertainty (k = 2) from 0.84 % to 0.13 %. PARRoT's performance was validated by comparing its response against a transfer standard silicon trap detector traceable to NIST's primary standard laser optimized cryogenic radiometer (LOCR) and against the C-series calorimeter. On average, these comparisons agreed to better than 0.008 % and 0.05 %, respectively.
