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Updated: Jun 13, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Throughput of diffraction-limited field optics systems for infrared and millimetric telescopes
1University of Chicago, Enrico Fermi Institute, Chicago, Illinois 60637, USA.
Abstract:
Telescopes for submillimeter wavelengths have point spread functions some millimeters or centimeters in diameter, but the detectors may be only fractions of a millimeter in size. Thus a field aperture and collecting optics are needed. We show how to optimize the aperture by a calculation of the effects of diffraction on signal and resolution as a function of size of the collecting aperture. Our calculations are compared to experimental results from observations of Mars at submillimeter wavelengths.
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