Axicon aberration leading to short-range nondiverging optical array and elliptical dark hollow beam

Rajeev Dwivedi; Parag Sharma; Virendra Kumar Jaiswal; Ranjana Mehrotra

doi:10.1117/1.OE.57.5.055106

17 May 2018 Axicon aberration leading to short-range nondiverging optical array and elliptical dark hollow beam

Rajeev Dwivedi, Parag Sharma, Virendra Kumar Jaiswal, Ranjana Mehrotra

Author Affiliations +

Optical Engineering, Vol. 57, Issue 5, 055106 (May 2018). https://doi.org/10.1117/1.OE.57.5.055106

Abstract

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.

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Rajeev Dwivedi, Parag Sharma, Virendra Kumar Jaiswal, and Ranjana Mehrotra "Axicon aberration leading to short-range nondiverging optical array and elliptical dark hollow beam," Optical Engineering 57(5), 055106 (17 May 2018). https://doi.org/10.1117/1.OE.57.5.055106

Received: 5 January 2018; Accepted: 10 April 2018; Published: 17 May 2018

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