Dwivedi, Rajeev and Sharma, Parag and Jaiswal, Virendra Kumar and Mehrotra, Ranjana (2018) Axicon aberration leading to short-range nondiverging optical array and elliptical dark hollow beam. Optical Engineering, 57 (5). 055106-055119. ISSN 0091-3286

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We propose a unique method for producing nondiverging optical array and elliptical hollow beam in a controlled manner using aberration patterns generated from oblique illumination of axicon. The optical arrays with propagation invariance property are persisted for short ranges in the focal depth, whereas diverging array with a constant number of bright spots is produced beyond bottle beam. The measured variation in the geometrical parameters of obliquely illuminated axicon setup has facilitated precise control on the dimension of optical array and shape of the elliptical hollow beam, respectively. The theoretical analysis confirms the experimental results for the generation of short-range nondiverging optical array and elliptical dark hollow beam with fine control. To the best of our knowledge, this is the first experimental approach to extend the potential of axicon beyond generation of Bessel and circular hollow beams.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Society of Photo-optical Instrumentation Engineers.
Subjects: Optics
Depositing User: Mr. Yogesh Joshi
Date Deposited: 31 Jan 2020 11:30
Last Modified: 31 Jan 2020 11:30
URI: http://npl.csircentral.net/id/eprint/4082

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