Sub-Rayleigh optical vortex coronagraphy

Elettra Mari

doi:10.1364/OE.20.002445

2012-01-19

Elettra Mari *

Fabrizio Tamburini

Grover A. Swartzlander

DOI：10.1364/OE.20.002445

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摘要

En 中文

We introduce a new optical vortex coronagraph(OVC) method to determine the angular distance between two sources when the separation is sub-Rayleigh. We have found a direct relationship between the position of the minima and the source angular separation. A priori knowledge about the location of the two sources is not required. The superresolution capabilities of an OVC, equipped with an l = 2 N-step spiral phase plate in its optical path, were investigated numerically. The results of these investigations show that a fraction of the light, increasing with N, from the secondary source can be detected with a sub-Rayleigh resolution of at least 0.1 lambda/D. (C) 2012 Optical Society of America

Keyword:

PHASE-MASK CORONAGRAPH

LASER-BEAMS

FABRICATION

VORTICES

LIGHT

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期刊

Optics Express

IF:

3.3

论文数:

6.1W

被引数:

14.3W

机构

Rochester Institute of Technology

学者数:

3.8K

论文数: 3.3K

被引数: 45

University of Padua

学者数:

5.1W

论文数: 4.3W

被引数: 57

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