Optical stethoscopy: Image recording with resolution λ/20
Abstract
Subwave length-resolution optical image recording is demonstrated by moving an extremely narrow aperture along a test object equipped with fine-line structures. Details of 25-nm size can be recognized using 488-nm radiation. The result indicates a resolving power of at least λ/20 which is to be compared with the values of λ/2.3 obtainable in conventional optical microscopy.
- Publication:
-
Applied Physics Letters
- Pub Date:
- April 1984
- DOI:
- 10.1063/1.94865
- Bibcode:
- 1984ApPhL..44..651P