Abstract
We study the problem of light focusing by a high-aperture lens through a planar interface between two media with different refractive indices. It is demonstrated how, by using annular illumination, the intensity distribution can be significantly confined. A new scanning mechanism is proposed to continuously probe the intensity peak through the second medium. This mechanism may be applied in, for example, lithography and three-dimensional imaging.
Original language | English |
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Pages (from-to) | 1237-1248 |
Number of pages | 12 |
Journal | Pure and Applied Optics |
Volume | 7 |
Issue number | 5 |
DOIs | |
Publication status | Published - Sept 1998 |
Externally published | Yes |
ASJC Scopus Subject Areas
- General Engineering
- General Physics and Astronomy