Ritboon, A. (2020) The effect of astigmatism induced by refraction on the orbital angular momentum of light. Journal of Optics, 22(7), 075201. (doi: 10.1088/2040-8986/ab9685)
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Abstract
We use the Fourier transform and Snell's law to demonstrate how refraction at a flat interface induces astigmatism and transforms the spatial distribution of a stigmatic beam. Refraction makes the beam parameters for the transverse dimensions perpendicular and parallel to the plane of incidence grow differently and gives rise astigmatism. The decompositions of the orbital angular momentum of the beam before and after refraction are different. A single-value state of orbital angular momentum of the incident photon in a Laguerre-Gaussian mode is transformed into a superposition state.
| Item Type: | Articles |
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| Additional Information: | The author acknowledges financial support from the Development and Promotion of Science and Technology Talents Project (DPST), Thailand. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ritboon, Atirach |
| Authors: | Ritboon, A. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Journal of Optics |
| Publisher: | IOP Publishing |
| ISSN: | 2040-8978 |
| ISSN (Online): | 2040-8986 |
| Published Online: | 26 May 2020 |
| Copyright Holders: | Copyright © 2020 IOP Publishing Ltd. |
| First Published: | First published in Journal of Optics 22(7): 075201 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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