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) Side window’s dimension and firing angle fabricated at different laser power; b) Fluorescent profile of side-firing light from an optical fiber with four windows in acridine orange solution. Red circles show the position of each side window. The white arrow indicates the light direction in the fiber. The distance between each window is 8 mm.
