Reduction of the focal spot size by using polarization effects

Leuchs G (2000)


Publication Type: Conference contribution

Publication year: 2000

Publisher: IEEE

Edited Volumes: Conference on Lasers and Electro-Optics Europe - Technical Digest

Book Volume: CThJ6

Pages Range: 342

Conference Proceedings Title: IQEC'2000 Conference Digest

Event location: Nice

Abstract

Polarization distribution of the focused beam reduced the focal area in an optical system with high numerical aperture (NA). Focal intensity distribution was measured using knife edge method setup. An incoming beam is focused by a microscope objective onto a specially designed p-i-n photodiode, where parts of the light sensitive area were covered with a sharp edged gold pad. By measuring the dependence of the photocurrent on the translation distance for different translation directions and orientations of the gold pad a reconstruction of the shape of the focus is possible by applying the Radon back-transformation.

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How to cite

APA:

Leuchs, G. (2000). Reduction of the focal spot size by using polarization effects. In IQEC'2000 Conference Digest (pp. 342). Nice: IEEE.

MLA:

Leuchs, Gerd. "Reduction of the focal spot size by using polarization effects." Proceedings of the IQEC'2000, Nice IEEE, 2000. 342.

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