Directional narrowing of the diffractive pattern through a combination of spherical and spiral optical elements within a single aperture.
Appl Opt
; 36(31): 8085-90, 1997 Nov 01.
Article
in En
| MEDLINE
| ID: mdl-18264339
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Appl Opt
Year:
1997
Document type:
Article
Country of publication:
United States