Peer-Reviewed Journal Details
Mandatory Fields
PADMAN, R;MURPHY, JA
1991
January
Infrared Physics
RADIATION-PATTERNS OF SCALAR LIGHTPIPES
Published
9 ()
Optional Fields
WAVEGUIDE
31
441
446
At long wavelengths, diffraction effects cause condensing lightpipes to have a significant response in directions within the geometric optics shadow zone. Here, using an analogy with the corrugated "scalar" horns often used in antenna engineering, we point out that a lightpipe with anisotropic surface impedance on its interior surfaces can have substantially reduced sidelobe levels. This may be important for measurements requiring high dynamic range, particularly in the far-infrared.
OXFORD
0020-0891
Grant Details