Multiple-pass configuration for improved reflection mode confocal system

K. U. Hii

doi:10.1117/12.2539982

30 December 2019 Multiple-pass configuration for improved reflection mode confocal system

K. U. Hii

Proceedings Volume 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019; 1120020 (2019) https://doi.org/10.1117/12.2539982
Event: ANZCOP, 2019, Melbourne, Australia

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.

Citation Download Citation

K. U. Hii "Multiple-pass configuration for improved reflection mode confocal system", 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); https://doi.org/10.1117/12.2539982

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