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Title: Cascaded Optical Nonlinearities in Dielectric Metasurfaces

Abstract

Since the discovery of the laser, optical nonlinearities have been at the core of efficient light conversion sources. Typically, thick transparent crystals or quasi-phase matched waveguides are utilized in conjunction with phase-matching techniques to select a single parametric process. In recent years, due to the rapid developments in artificially structured materials, optical frequency mixing has been achieved at the nanoscale in subwavelength resonators arrayed as metasurfaces. Phase matching becomes relaxed for these wavelength-scale structures, and all allowed nonlinear processes can, in principle, occur on an equal footing. This could promote harmonic generation via a cascaded (consisting of several frequency mixing steps) process. However, so far, all reported work on dielectric metasurfaces have assumed frequency mixing from a direct (single step) nonlinear process. In this work, we prove the existence of cascaded second-order optical nonlinearities by analyzing the second- and third-wave mixing from a highly nonlinear metasurface in conjunction with polarization selection rules and crystal symmetries. We find that the third-wave mixing signal from a cascaded process can be of comparable strength to that from conventional third-harmonic generation and that surface nonlinearities are the dominant mechanism that contributes to cascaded second-order nonlinearities in our metasurface.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
OSTI Identifier:
1870464
Report Number(s):
SAND2022-4034J
Journal ID: ISSN 2330-4022; 704711; TRN: US2306545
Grant/Contract Number:  
NA0003525; BES-20-017574
Resource Type:
Accepted Manuscript
Journal Name:
ACS Photonics
Additional Journal Information:
Journal Volume: 9; Journal Issue: 3; Journal ID: ISSN 2330-4022
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 36 MATERIALS SCIENCE; metasurfaces; harmonic generation; cascaded optical nonlinearities; polarization

Citation Formats

Gennaro, Sylvain D., Doiron, Chloe F., Karl, Nicholas, Iyer, Prasad P., Serkland, Darwin K., Sinclair, Michael B., and Brener, Igal. Cascaded Optical Nonlinearities in Dielectric Metasurfaces. United States: N. p., 2022. Web. doi:10.1021/acsphotonics.1c01937.
Gennaro, Sylvain D., Doiron, Chloe F., Karl, Nicholas, Iyer, Prasad P., Serkland, Darwin K., Sinclair, Michael B., & Brener, Igal. Cascaded Optical Nonlinearities in Dielectric Metasurfaces. United States. https://doi.org/10.1021/acsphotonics.1c01937
Gennaro, Sylvain D., Doiron, Chloe F., Karl, Nicholas, Iyer, Prasad P., Serkland, Darwin K., Sinclair, Michael B., and Brener, Igal. Fri . "Cascaded Optical Nonlinearities in Dielectric Metasurfaces". United States. https://doi.org/10.1021/acsphotonics.1c01937. https://www.osti.gov/servlets/purl/1870464.
@article{osti_1870464,
title = {Cascaded Optical Nonlinearities in Dielectric Metasurfaces},
author = {Gennaro, Sylvain D. and Doiron, Chloe F. and Karl, Nicholas and Iyer, Prasad P. and Serkland, Darwin K. and Sinclair, Michael B. and Brener, Igal},
abstractNote = {Since the discovery of the laser, optical nonlinearities have been at the core of efficient light conversion sources. Typically, thick transparent crystals or quasi-phase matched waveguides are utilized in conjunction with phase-matching techniques to select a single parametric process. In recent years, due to the rapid developments in artificially structured materials, optical frequency mixing has been achieved at the nanoscale in subwavelength resonators arrayed as metasurfaces. Phase matching becomes relaxed for these wavelength-scale structures, and all allowed nonlinear processes can, in principle, occur on an equal footing. This could promote harmonic generation via a cascaded (consisting of several frequency mixing steps) process. However, so far, all reported work on dielectric metasurfaces have assumed frequency mixing from a direct (single step) nonlinear process. In this work, we prove the existence of cascaded second-order optical nonlinearities by analyzing the second- and third-wave mixing from a highly nonlinear metasurface in conjunction with polarization selection rules and crystal symmetries. We find that the third-wave mixing signal from a cascaded process can be of comparable strength to that from conventional third-harmonic generation and that surface nonlinearities are the dominant mechanism that contributes to cascaded second-order nonlinearities in our metasurface.},
doi = {10.1021/acsphotonics.1c01937},
journal = {ACS Photonics},
number = 3,
volume = 9,
place = {United States},
year = {Fri Feb 11 00:00:00 EST 2022},
month = {Fri Feb 11 00:00:00 EST 2022}
}

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