Journal ArticleDOI
Transverse or axial superresolution in a 4Pi-confocal microscope by phase-only filters.
Reads0
Chats0
TLDR
In this article, a novel procedure to design axial and transverse superresolving pupil filters for the 4Pi-confocal microscope is presented, based on the use of a series of figures of merit developed to describe the effect of inserting two identical filters in the two arms of the illumination path of the microscope.Abstract:
A novel procedure to design axial and transverse superresolving pupil filters for the 4Pi-confocal microscope is presented. The method is based on the use of a series of figures of merit developed to describe the effect of inserting two identical filters in the two arms of the illumination path of the microscope. As a practical implementation, we have applied our method to obtain superresolving continuous phase-only filters. Different resolution-improving phase functions are shown for the transverse and the axial direction. These filters provided axial gain up to 1.3 and transverse gain up to 1.4 without an increase in sidelobes.read more
Citations
More filters
Journal ArticleDOI
Tailoring femtosecond 1.5-μm Bessel beams for manufacturing high-aspect-ratio through-silicon vias
TL;DR: It is demonstrated that the tailored fs Bessel beam can be used to fabricate a 2D array of approximately ∅10- μm TSVs on a 100-μm-thick Si substrate without any sidelobe damage, suggesting potential application in the 3D assembly of 3D Si ICs.
Journal ArticleDOI
Comparison of superresolution effects with annular phase and amplitude filters
Hongxin Luo,Changhe Zhou +1 more
TL;DR: The experimental results show that both amplitude and phase filters can achieve superresolution, and generally, a phase superresolution filter is recommended for its higher efficiency and its special diffraction patterns that are impossible to achieve with an amplitude filter.
Journal ArticleDOI
Three-dimensional superresolution by three-zone complex pupil filters
TL;DR: Through the design of the essential parameters of such filters, the transmittance and radius of the first zone, three-dimensional superresolution is realized and the Strehl ratio and the transverse and axial gains are analyzed in detail.
Journal ArticleDOI
Superresolution in compensated telescopes.
TL;DR: A procedure for attaining resolution beyond the diffraction limit in ground-based telescopes is presented based on the use of rotationally symmetric pupil plane filters that can be easily implemented in dynamic optical devices such as a deformable mirror of an adaptive-optics system.
Journal ArticleDOI
Pupil filter design by using a Bessel functions basis at the image plane.
TL;DR: A new procedure for designing radially-symmetric pupil filters that is more precise than previous procedures as it considers the exact expression of the PSF, expanded as a function of first-order Bessel functions.
References
More filters
Journal ArticleDOI
Electromagnetic Diffraction in Optical Systems. II. Structure of the Image Field in an Aplanatic System
B. Richards,Emil Wolf +1 more
TL;DR: In this article, an investigation of the structure of the electromagnetic field near the focus of an aplanatic system which images a point source is made, and the results are illustrated by diagrams and in a tabulated form based on data obtained by extensive calculations on an electronic computor.
Journal ArticleDOI
Properties of a 4Pi confocal fluorescence microscope
TL;DR: In a 4Pi confocal fluorescence microscope two opposing microscope objective lenses were used to illuminate a fluorescent object from both sides and to collect the fluorescence emissions on both sides, resulting in an axial resolution approximately four times higher than that in a confocalfluorescence microscope.
Journal ArticleDOI
Fundamental improvement of resolution with a 4Pi-confocal fluorescence microscope using two-photon excitation
TL;DR: In this paper, a new type of confocal fluorescence microscope with an unprecedented resolution of up to four times higher than that of a traditional confocal microscopy was proposed, which yields the highest point resolution achieved in far field light microscopy.
Journal ArticleDOI
Imaging in high-aperture optical systems
TL;DR: In this article, a pseudoparaxial approximation of the axial variation in the complex amplitude was proposed to predict the effect of axial variations on optical imaging, including depth of focus, interference microscopy, and the imaging of objects with appreciable depth.