Difference-Frequency Generation in Polaritonic Intersubband Nonlinear Metasurfaces

Yingnan Liu; Jongwon Lee; Stephen March; Nishant Nookala; Daniele Palaferri; John F. Klem; Seth R. Bank; Igal Brener; Mikhail A. Belkin

doi:10.1002/adom.201800681

Difference-Frequency Generation in Polaritonic Intersubband Nonlinear Metasurfaces

Yingnan Liu, Jongwon Lee, Stephen March, Nishant Nookala, Daniele Palaferri, John F. Klem, Seth R. Bank, Igal Brener, Mikhail A. Belkin

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A nonlinear intersubband polaritonic metasurface designed for difference-frequency generation that provides a practical level of nonlinear response under continuous wave illumination is reported. An effective nonlinear susceptibility of up to 340 nm V⁻¹ is measured experimentally. Approximately 0.3% of λ = 5.4 µm photons are downconverted to λ = 12.9 µm photons at the focal spot in the experiment. This work indicates that the ultrathin metasurface devices may provide a versatile nonlinear element for frequency down- and upconversion in a relatively broad spectral range and without phase-matching constrains of traditional bulk nonlinear crystals.

Original language	English
Article number	1800681
Journal	Advanced Optical Materials
Volume	6
Issue number	20
DOIs	https://doi.org/10.1002/adom.201800681
State	Published - 18 Oct 2018
Externally published	Yes

Keywords

difference-frequency generation
down-conversion
frequency mixing
intersubband polaritons
nonlinear metasurfaces

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10.1002/adom.201800681

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abstract = "A nonlinear intersubband polaritonic metasurface designed for difference-frequency generation that provides a practical level of nonlinear response under continuous wave illumination is reported. An effective nonlinear susceptibility of up to 340 nm V−1 is measured experimentally. Approximately 0.3% of λ = 5.4 µm photons are downconverted to λ = 12.9 µm photons at the focal spot in the experiment. This work indicates that the ultrathin metasurface devices may provide a versatile nonlinear element for frequency down- and upconversion in a relatively broad spectral range and without phase-matching constrains of traditional bulk nonlinear crystals.",

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AU - Liu, Yingnan

AU - Lee, Jongwon

AU - March, Stephen

AU - Nookala, Nishant

AU - Palaferri, Daniele

AU - Klem, John F.

AU - Bank, Seth R.

AU - Brener, Igal

AU - Belkin, Mikhail A.

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AB - A nonlinear intersubband polaritonic metasurface designed for difference-frequency generation that provides a practical level of nonlinear response under continuous wave illumination is reported. An effective nonlinear susceptibility of up to 340 nm V−1 is measured experimentally. Approximately 0.3% of λ = 5.4 µm photons are downconverted to λ = 12.9 µm photons at the focal spot in the experiment. This work indicates that the ultrathin metasurface devices may provide a versatile nonlinear element for frequency down- and upconversion in a relatively broad spectral range and without phase-matching constrains of traditional bulk nonlinear crystals.

KW - difference-frequency generation

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Difference-Frequency Generation in Polaritonic Intersubband Nonlinear Metasurfaces

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Keywords

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