Asymmetric apodization in confocal scanning systems
- 10 December 1998
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 37 (35) , 8206-8214
- https://doi.org/10.1364/ao.37.008206
Abstract
A new class of superresolution pairs of pupil filters for three-dimensional, two-pupil confocal imaging is proposed. A distinctive feature of these filters is the asymmetry of their impulse response. For synthesizing the amplitude transmittance of such filters the Fourier transform properties of Hermitian functions are employed. It is shown that, with simple phase-only filters that belong to the class in question, either axial or unidirectional lateral superresolution is achieved.Keywords
This publication has 9 references indexed in Scilit:
- Diffractive superresolution elementsJournal of the Optical Society of America A, 1997
- Tunable axial superresolution by annular binary filters. Application to confocal microscopyOptics Communications, 1995
- On-axis diffractional behavior of two-dimensional pupilsApplied Optics, 1994
- Improved side-lobe suppression in asymmetric apodizationJournal of Physics D: Applied Physics, 1994
- Asymmetric apodizationMeasurement Science and Technology, 1991
- Optical sectioning in confocal fluorescent microscopesJournal of Microscopy, 1989
- Effect of aberrations and apodization on the performance of coherent optical systems I The amplitude impulse responseJournal of the Optical Society of America A, 1986
- Fraunhofer diffraction by semicircular aperturesJournal of the Optical Society of America, 1977
- Defocusing Images To Increase ResolutionScience, 1961