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.
Flight grating efficiency vs. order. The grating was oriented near Littrow (8.2° angle of incidence) for both measurements. The reduced peak efficiency in the green is predominantly due to the reflectivity of the gold coating used to maximize the efficiency in the red.
