Infrared imaging with nonlinear silicon resonator governed by high-Q quasi-BIC states

Xu, L ORCID: https://orcid.org/0000-0001-9071-4311, Sanderson, G, Zheng, Z, Melik-Gaykazyan, E, Gordon, G, Cousins, R, Ying, C and Rahmani, M, 2024. Infrared imaging with nonlinear silicon resonator governed by high-Q quasi-BIC states. Journal of Optics, 26 (6): 065505. ISSN 2040-8978

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Abstract

Nonlinear light-matter interactions have emerged as a promising platform for various applications, including imaging, nanolasing, background-free sensing, etc. Subwavelength dielectric resonators offer unique opportunities for manipulating light at the nanoscale and miniturising optical elements. Here, we explore the resonantly enhanced four-wave mixing (FWM) process from individual silicon resonators and propose an innovative FWM-enabled infrared imaging technique that leverages the capabilities of these subwavelength resonators. Specifically, we designed high-Q silicon resonators hosting dual quasi-bound states in the continuum at both the input pump and signal beams, enabling efficient conversion of infrared light to visible radiation. Moreover, by employing a point-scanning imaging technique, we achieve infrared imaging conversion while minimising the dependence on high-power input sources. This combination of resonant enhancement and point-scanning imaging opens up new possibilities for nonlinear imaging using individual resonators and shows potential in advancing infrared imaging techniques for high-resolution imaging, sensing, and optical communications.

Item Type:	Journal article
Publication Title:	Journal of Optics
Creators:	Xu, L., Sanderson, G., Zheng, Z., Melik-Gaykazyan, E., Gordon, G., Cousins, R., Ying, C. and Rahmani, M.
Publisher:	IOP Publishing
Date:	13 May 2024
Volume:	26
Number:	6
ISSN:	2040-8978
Identifiers:	Number Type 10.1088/2040-8986/ad44a9 DOI 1892001 Other
Rights:	Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	07 May 2024 12:40
Last Modified:	17 Jun 2024 10:03
URI:	https://irep.ntu.ac.uk/id/eprint/51393

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