TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Atomic layer deposited second-order nonlinear optical metamaterial for back-end integration with CMOS-compatible nanophotonic circuitry

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Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut5371-5374
Sivumäärä4
JulkaisuOptics Letters
Vuosikerta40
Numero22
DOI - pysyväislinkit
TilaJulkaistu - 1 marraskuuta 2015
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

We report the fabrication of artificial unidimensional crystals exhibiting an effective bulk second-order nonlinearity. The crystals are created by cycling atomic layer deposition of three dielectric materials such that the resulting metamaterial is noncentrosymmetric in the direction of the deposition. Characterization of the structures by second-harmonic generation Maker-fringe measurements shows that the main component of their nonlinear susceptibility tensor is about 5xA0;pm/V, which is comparable to well-established materials and more than an order of magnitude greater than reported for a similar crystal Appl. Phys. Lett.107, 121903 (2015)APPLAB0003-695110.1063/1.4931492. Our demonstration opens new possibilities for second-order nonlinear effects on CMOS-compatible nanophotonic platforms.

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