FIG 1.
Schematic representation of the optical system. BS: beam sampler, CL: collimating lenses, DMD: digital micromirror device, OL: 10× objective lens, PC: computer, PD: photodiode, and UST: ultrasonic transducer.
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.