Physical optics modeling of 2D dielectric lenses.

We propose an advanced physical optics formulation for the accurate modeling of dielectric lenses used in quasi-optical systems of millimeter, submillimeter, and infrared wave applications. For comparison, we obtain an exact full-wave solution of a two-dimensional lens problem and use it as a benchmark for testing and validation of asymptotic models being considered.

Efficient computation of the broadband beam sidelobes exemplified by the Planck high-frequency instrument.

Simulation of broadband far sidelobes of large submillimeter-wave telescopes exemplified by the European Space Agency Planck high-frequency instrument (HFI) beams is analyzed. Optimal sampling of the far side-lobes is considered. A universal and efficient method for computing the broadband sidelobes is proposed that makes the full-sky broadband HFI beam simulations feasible.