Topic
Physical optics
About: Physical optics is a research topic. Over the lifetime, 5342 publications have been published within this topic receiving 101388 citations. The topic is also known as: wave optics.
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TL;DR: In this paper, the optical transfer function (OTF) for a defocused circular pupil with an arbitrary diameter is presented, which is based on the wave optics and thus is more realistic than ray optics based methods.
Abstract: One of the main features of modern cameras is their ability to perform a mechanical autofocus and capture a sharp image. Experimental results for misfocusing corrections by fast and exact numerical postprocessing algorithms are presented. Furthermore, the optical transfer function (OTF) for a defocused circular pupil with an arbitrary diameter is presented. These methods are based on the wave optics and, thus, are more realistic than ray optics based methods.
22 citations
TL;DR: In this paper, a physical optics (PO) method is presented which in two steps calculates the scattered field of a reflector or a lens in a beam waveguide (BWG).
Abstract: A physical optics (PO) method is presented which in two steps calculates the scattered field of a reflector or a lens in a beam waveguide (BWG). The first step involves a calculation of a set of currents on an auxiliary plane and the second step a field calculation from this current set. The method is named A-PO that refers to the calculation of PO currents on an Auxiliary plane. A-PO is less accurate than PO for sidelobe analysis, but useful for first-pass analysis of the main beam region in a BWG where it is significantly faster than standard PO. Two examples show that the co-polar as well as cross-polar radiation in a submillimeter BWG can be efficiently determined 40 dB below peak.
22 citations
TL;DR: An extension of the recently developed method of intensity diffraction tomography is derived that assumes that the probing field is a spherical wave produced by a point source sufficiently far from the scatterer.
Abstract: An extension of the recently developed method of intensity diffraction tomography is derived that assumes that the probing field is a spherical wave produced by a point source sufficiently far from the scatterer. A discussion of the method and numerical reconstructions of a simulated three-dimensional scattering object are presented.
22 citations
24 Sep 1996
TL;DR: A hybrid physical optics/method of moments technique (PO/MoM) has been developed and implemented as described by Jakobus and Landstorfer (see IEEE Transactions on Antennas and Propagation, vol.43, no.2, p.162-9, 1995).
Abstract: A hybrid physical optics/method of moments technique (PO/MoM) has been developed and implemented as described by Jakobus and Landstorfer (see IEEE Transactions on Antennas and Propagation, vol.43, no.2, p.162-9, 1995). This technique holds great computational advantages over conventional MoM techniques for practical engineering applications in the higher frequency range, i.e. when the dimensions of the scattering body are in the range of one wavelength or above. The theory behind the PO/MoM hybrid formulation as well as the applicability and accuracy of the technique are considered.
22 citations
TL;DR: An improved version of the hybrid model of laser energy deposition is proposed, where a new physically consistent criterion for transition to the 1D wave optics is derived, and a special rescaling procedure of the wave-optics deposition profile is introduced.
22 citations