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Proceedings Paper

Multiple-pass configuration for improved reflection mode confocal system
Author(s): K. U. Hii
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Paper Abstract

The concept of using multiple-pass technique to improve the axial resolution of a reflection mode confocal system is presented. The propose technique allows further diversion on the given out-of-focus rays from entering the pinhole, imposing a more stringent limit for rays around the in-focus region to be detected as confocal signal. The feasibility of the propose technique was experimentally examined. The comparison of the full width at half maximum (FWHM) of the normalized intensity profiles shows that the axial scanning resolution achieved by the proposed technique is twofold of that of the conventional technique.

Paper Details

Date Published: 30 December 2019
PDF: 2 pages
Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 1120020 (30 December 2019); doi: 10.1117/12.2539982
Show Author Affiliations
K. U. Hii, Swinburne Univ. of Technology, Sarawak Campus (Malaysia)


Published in SPIE Proceedings Vol. 11200:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019
Arnan Mitchell; Halina Rubinsztein-Dunlop, Editor(s)

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