Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics.

Deinert J-C, Alcaraz Iranzo D, Perez R, Jia X, Hafez HA, Ilyakov I, Awari N, Chen M, Bawatna M, Ponomaryov AN, Germanskiy S, et al. (2020)
ACS nano.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Autor*in
Deinert, Jan-Christoph; Alcaraz Iranzo, David; Perez, Raul; Jia, Xiaoyu; Hafez, Hassan A; Ilyakov, Igor; Awari, Nilesh; Chen, Min; Bawatna, Mohammed; Ponomaryov, Alexey N; Germanskiy, Semyon; Bonn, Mischa
Alle
Abstract / Bemerkung
Nonlinear optics is an increasingly important field for scientific and technological applications, owing to its relevance and potential for optical and optoelectronic technologies. Currently, there is an active search for suitable nonlinear material systems with efficient conversion and a small material footprint. Ideally, the material system should allow for chip integration and room-temperature operation. Two-dimensional materials are highly interesting in this regard. Particularly promising is graphene, which has demonstrated an exceptionally large nonlinearity in the terahertz regime. Yet, the light-matter interaction length in two-dimensional materials is inherently minimal, thus limiting the overall nonlinear optical conversion efficiency. Here, we overcome this challenge using a metamaterial platform that combines graphene with a photonic grating structure providing field enhancement. We measure terahertz third-harmonic generation in this metamaterial and obtain an effective third-order nonlinear susceptibility with a magnitude as large as 3 * 10-8 m2/V2, or 21 esu, for a fundamental frequency of 0.7 THz. This nonlinearity is 50 times larger than what we obtain for graphene without grating. Such an enhancement corresponds to a third-harmonic signal with an intensity that is 3 orders of magnitude larger due to the grating. Moreover, we demonstrate a field conversion efficiency for the third harmonic of up to 1% using a moderate field strength of 30 kV/cm. Finally, we show that harmonics beyond the third are enhanced even more strongly, allowing us to observe signatures of up to the ninth harmonic. Grating-graphene metamaterials thus constitute an outstanding platform for commercially viable, CMOS-compatible, room-temperature, chip-integrated, THz nonlinear conversion applications.
Erscheinungsjahr
2020
Zeitschriftentitel
ACS nano
eISSN
1936-086X
Page URI
https://pub.uni-bielefeld.de/record/2949980

Zitieren

Deinert J-C, Alcaraz Iranzo D, Perez R, et al. Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics. ACS nano. 2020.
Deinert, J. - C., Alcaraz Iranzo, D., Perez, R., Jia, X., Hafez, H. A., Ilyakov, I., Awari, N., et al. (2020). Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics. ACS nano. doi:10.1021/acsnano.0c08106
Deinert, J. - C., Alcaraz Iranzo, D., Perez, R., Jia, X., Hafez, H. A., Ilyakov, I., Awari, N., Chen, M., Bawatna, M., Ponomaryov, A. N., et al. (2020). Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics. ACS nano.
Deinert, J.-C., et al., 2020. Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics. ACS nano.
J.-C. Deinert, et al., “Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics.”, ACS nano, 2020.
Deinert, J.-C., Alcaraz Iranzo, D., Perez, R., Jia, X., Hafez, H.A., Ilyakov, I., Awari, N., Chen, M., Bawatna, M., Ponomaryov, A.N., Germanskiy, S., Bonn, M., Koppens, F.H.L., Turchinovich, D., Gensch, M., Kovalev, S., Tielrooij, K.-J.: Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics. ACS nano. (2020).
Deinert, Jan-Christoph, Alcaraz Iranzo, David, Perez, Raul, Jia, Xiaoyu, Hafez, Hassan A, Ilyakov, Igor, Awari, Nilesh, Chen, Min, Bawatna, Mohammed, Ponomaryov, Alexey N, Germanskiy, Semyon, Bonn, Mischa, Koppens, Frank H L, Turchinovich, Dmitry, Gensch, Michael, Kovalev, Sergey, and Tielrooij, Klaas-Jan. “Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics.”. ACS nano (2020).

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