Broadband antihole photon sieve telescope.
A broadband-corrected optical telescope has been constructed from a photon sieve with five million holes. Through careful optimization of hole size, this "antihole" sieve has holes centered on the dark underlying Fresnel zones. The diffraction-limited performance of a 1 m focal-length, f/10 element is demonstrated with a view toward constructing large lightweight telescopes for space applications.
Andersen
Geoff
G
Laser and Optics Research Center, U.S. Air Force Academy, Colorado 80840, USA. geoff.andersen@usafa.af.mil
Tullson
Drew
D