Extreme optical nonlinearities in metallic quantum wells

Zhaowei Liu

doi:10.1117/12.2608340

5 March 2022 Extreme optical nonlinearities in metallic quantum wells

Zhaowei Liu

Proceedings Volume PC12005, Smart Photonic and Optoelectronic Integrated Circuits 2022; PC1200506 (2022) https://doi.org/10.1117/12.2608340
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

New materials that exhibit strong optical nonlinearities at a desired operational frequency are of paramount importance for nonlinear optics. We investigated a refractory metallic/dielectric heterostructured platform, i.e., TiN/Al2O3 epitaxial multilayers, to achieve extreme nonlinearities at NIR frequencies due to the electronic intersubband transitions. This platform has shown χ(2) of 1500 pm/V and n2 of 10-14m2/W at NIR frequencies. Such extreme 2nd and 3rd order nonlinearities have been utilized to achieve efficient second harmonic generation and pulse limiter with total film thickness less than 100nm. The metallic quantum wells could find important applications in nanophotonics, nonlinear optics and meta-.

Conference Presentation

Citation Download Citation

Zhaowei Liu "Extreme optical nonlinearities in metallic quantum wells", Proc. SPIE PC12005, Smart Photonic and Optoelectronic Integrated Circuits 2022, PC1200506 (5 March 2022); https://doi.org/10.1117/12.2608340

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