scholarly journals Phase retrieval from a high-numerical-aperture intensity distribution by use of an aperture-array filter

2009 ◽  
Vol 26 (10) ◽  
pp. 2172 ◽  
Author(s):  
Nobuharu Nakajima
Keyword(s):  
Intensity Distribution ◽  
Phase Retrieval ◽  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Aperture Array

Phase retrieval for high-numerical-aperture optical systems

2003 ◽  
Vol 28 (10) ◽  
pp. 801 ◽  
Author(s):  
Bridget M. Hanser ◽  
Mats G. L. Gustafsson ◽  
David A. Agard ◽  
John W. Sedat
Keyword(s):  
Phase Retrieval ◽  
Numerical Aperture ◽  
Optical Systems ◽  
High Numerical Aperture

scholarly journals Projection methods for high numerical aperture phase retrieval

2021 ◽  
Author(s):  
Hieu Thao Nguyen ◽  
Oleg Soloviev ◽  
D Russell Luke ◽  
Michel Verhaegen
Keyword(s):  
Phase Retrieval ◽  
Numerical Aperture ◽  
Projection Methods ◽  
The Other ◽  
Projection Operators ◽  
Mathematical Framework ◽  
Convergence Criteria ◽  
Projection Algorithms ◽  
High Numerical Aperture ◽  
Retrieval Problem

Abstract We develop for the first time a mathematical framework in which the class of projection algorithms can be applied to high numerical aperture (NA) phase retrieval. Within this framework, we first analyze the basic steps of solving the high-NA phase retrieval problem by projection algorithms and establish the closed forms of all the relevant projection operators. We then study the geometry of the high-NA phase retrieval problem and the obtained results are subsequently used to establish convergence criteria of projection algorithms in the presence of noise. Making use of the vectorial point-spread-function (PSF) is, on the one hand, the key difference between this paper and the literature of phase retrieval mathematics which deals with the scalar PSF. The results of this paper, on the other hand, can be viewed as extensions of those concerning projection methods for low-NA phase retrieval. Importantly, the improved performance of projection methods over the other classes of phase retrieval algorithms in the low-NA setting now also becomes applicable to the high-NA case. This is demonstrated by the accompanying numerical results which show that available solution approaches for high-NA phase retrieval are outperformed by projection methods.

scholarly journals Focal Surface Detection of High Numerical Aperture Objective Lens Based on Differential Astigmatic Method

2021 ◽  
Vol 13 (4) ◽  
pp. 1-8
Author(s):  
Jia-Lin Du ◽  
Wei Yan ◽  
Li-Wei Liu ◽  
Fan-Xing Li ◽  
Fu-Ping Peng ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Objective Lens ◽  
High Numerical Aperture ◽  
Surface Detection ◽  
Focal Surface

High-numerical-aperture silica core fibers

2004 ◽  
Author(s):  
Bolesh J. Skutnik ◽  
Brian Foley ◽  
Kelly B. Moran
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture ◽  
Silica Core

Aberration-free optical refocusing in high numerical aperture microscopy

2007 ◽  
Vol 32 (14) ◽  
pp. 2007 ◽  
Author(s):  
Edward J. Botcherby ◽  
Rimas Juskaitis ◽  
Martin J. Booth ◽  
Tony Wilson
Keyword(s):  
Numerical Aperture ◽  
High Numerical Aperture
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