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) Channel depth as a function of laser power for various spot sizes. (b) Shape of the channel cut out by 40% laser power with various laser spot sizes. Spot sizes are varied by considering focused and unfocused beam according to Equation (11).
