Second harmonic generation in amorphous silicon-on-silica metamaterial

Xu, Jie, Plum, Eric, Savinov, Vassili and Zheludev, Nikolai (2021) Second harmonic generation in amorphous silicon-on-silica metamaterial. APL Photonics, 6 (3), [036110]. (doi:10.1063/5.0037428).

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Abstract

We demonstrate second harmonic generation by using an amorphous silicon metamaterial fabricated on the tip of an optical fiber that collects the generated light. The metamaterial is a double-chevron array that supports a closed-mode resonance for the fundamental wavelength at 1510 nm with a quality factor of 30. The normalized resonant second harmonic conversion efficiency calculated per intensity and square of interaction length is ∼10 ⁻¹¹ W ⁻¹, which exceeds the previously achieved value for a silicon metamaterial by two orders of magnitude.

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SHG in silicon-on-silica metamaterial - accepted version - Accepted Manuscript

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Accepted/In Press date: 9 March 2021

Published date: 22 March 2021

Additional Information: Funding Information: This work was supported by the UK’s Engineering and Physical Sciences Research Council (Grant No. EP/M009122/1), the A∗STAR QTE program, Singapore (Grant No. SERC A1685b0005), the Ministry of Education, Singapore [Grant No. MOE2016-T3-1-006 (S)], and the China Scholarship Council (Grant No. CSC No. 201706310145). Publisher Copyright: © 2021 Author(s).

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