Optical and thermal analysis of the light-heat conversion process employing an antenna-based hybrid plasmonic waveguide for HAMR

Abadia, Nicolas ORCID: https://orcid.org/0000-0002-7355-4245, Bello, Frank, Zhong, Chuan, Flanigan, Patrick, McCloskey, David M., Wolf, Christopher, Krichevsky, Alexander, Wolf, Daniel, Zong, Fenghua, Samani, Alireza, Plant, David V. and Donegan, John F. 2018. Optical and thermal analysis of the light-heat conversion process employing an antenna-based hybrid plasmonic waveguide for HAMR. Optics Express 26 (2) , pp. 1752-1765. 10.1364/OE.26.001752

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Abstract

We investigate a tapered, hybrid plasmonic waveguide which has previously been proposed as an optically efficient near-field transducer (NFT), or component thereof, in several devices which aim to exploit nanofocused light. We numerically analyze how light is transported through the waveguide and ultimately focused via effective-mode coupling and taper optimization. Crucial dimensional parameters in this optimization process are identified that are not only necessary to achieve maximum optical throughput, but also optimum thermal performance with specific application towards heat-assisted magnetic recording (HAMR). It is shown that existing devices constructed on similar waveguides may benefit from a heat spreader to avoid deformation of the plasmonic element which we achieve with no cost to the optical efficiency. For HAMR, our design is able to surpass many industry requirements in regard to both optical and thermal efficiency using pertinent figure of merits like 8.5% optical efficiency.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Optical Society of America
ISSN:	1094-4087
Date of First Compliant Deposit:	13 November 2018
Date of Acceptance:	4 January 2018
Last Modified:	04 May 2023 09:26
URI:	https://orca.cardiff.ac.uk/id/eprint/116717

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