Document Detail

Systematic design of an anastigmatic lens axicon.
MedLine Citation:
PMID:  17712369     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We present an analytical method for systematic optical design of a double-pass axicon that shows almost no astigmatism in oblique illumination compared to a conventional linear axicon. The anastigmatic axicon is a singlet lens with nearly concentric spherical surfaces applied in double pass, making it possible to form a long narrow focal line of uniform width. The front and the back surfaces have reflective coatings in the central and annular zones, respectively, to provide the double pass. Our design method finds the radii of curvatures and axial thickness of the lens for a given angle between the exiting rays and the optical axis. It also finds the optimal position of the reflecting zones for minimal vignetting. This method is based on ray tracing of the real rays at the marginal heights of the aperture and therefore is superior to any paraxial method. We illustrate the efficiency of the method by designing a test axicon with optical parameters used for a prototype axicon, which was manufactured and experimentally tested. We compare the optical characteristics of our test axicon with those of the experimental prototype.
Alexander V Goncharov; Anna Burvall; Christopher Dainty
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  46     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-22     Completed Date:  2008-01-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6076-80     Citation Subset:  -    
Department of Experimental Physics, National University of Ireland, Galway, Ireland.
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