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.
Schematic representation of the optical setup adopted. (1) White light source, (2) linear polarizer, (3) QWP rotated at 90° steps, (4) thin film sample, (5) 450 nm blue bandpass filter, (6) Zeiss Discovery V8 microscope, (7) digital camera.
