Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Temporal dependence of the pixel value averaged inside the ROI after subtraction its DC level. (b) Calculated reference function using adaptive algorithm. Green vertical bars show borders of single-period cosine segments after their phase adjustment with the raw time trace of averaged pixel values.
