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.
Radial intensity distribution in the focus of a parabolic mirror covering the full solid angle (solid line) and a mirror covering 93.65% of the solid angle when weighted with the emission pattern of a linear dipole oriented along the mirror axis (dashed line). (The color version of this figure is included in the online version of the journal.)
