scholarly journals Three-dimensional image formation under single-photon ultra-short pulsed illumination

2009 ◽  
Author(s):  
Arijit K. De ◽  
Debabrata Goswami
Keyword(s):  
Single Photon ◽  
Three Dimensional ◽  
Image Formation ◽  
Dimensional Image

Three-dimensional image formation in confocal microscopy

1990 ◽  
Vol 159 (2) ◽  
pp. 179-194 ◽  
Author(s):  
C. J. R. Sheppard ◽  
C. J. Cogswell
Keyword(s):  
Confocal Microscopy ◽  
Three Dimensional ◽  
Image Formation ◽  
Dimensional Image

Image Formation in Femtosecond Confocal Interference Microscopy

1998 ◽  
Vol 4 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Min Gu
Keyword(s):  
Continuous Wave ◽  
Three Dimensional ◽  
Image Formation ◽  
Chromatic Aberration ◽  
Interference Microscopy ◽  
Scanning Microscope ◽  
Image System ◽  
Dimensional Image ◽  
Confocal Scanning ◽  
Transverse Resolution

Three-dimensional image formation in an interference confocal scanning microscope under ultra-short pulsed beam illumination is investigated in this study. The novelty of this new image system is that it keeps advantages in femtosecond interferometry but also provides a femtosecond-resolved three-dimensional image without necessarily using an ultrafast detector. For a 5-fs pulsed beam illumination, spatial resolution in the axial and transverse directions in this system is improved by approximately 45% and 15%, respectively, compared with that in the case of continuous wave illumination. However, strong chromatic aberration caused by an ultrashort pulsed beam can result in a degradation of spatial and temporal resolution, whereas weak chromatic aberration may lead to an improvement in transverse resolution.

Criteria and Methods for Reliable Three-Dimensional Image Reconstruction

1974 ◽  
Vol 32 ◽  
pp. 330-331
Author(s):  
R. A. Crowther
Keyword(s):  
Image Reconstruction ◽  
Finite Number ◽  
Density Distribution ◽  
Electron Micrographs ◽  
Mathematical Problem ◽  
Three Dimensional ◽  
Ideal Case ◽  
Dimensional Image ◽  
General Object ◽  
The Ideal

The reconstruction of a three-dimensional image of a specimen from a set of electron micrographs reduces, under certain assumptions about the imaging process in the microscope, to the mathematical problem of reconstructing a density distribution from a set of its plane projections.In the absence of noise we can formulate a purely geometrical criterion, which, for a general object, fixes the resolution attainable from a given finite number of views in terms of the size of the object. For simplicity we take the ideal case of projections collected by a series of m equally spaced tilts about a single axis.

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