Journal
ACS PHOTONICS
Volume 8, Issue 3, Pages 824-831Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.0c01759
Keywords
hexagonal boron nitride; third-harmonic generation; third-order susceptibility; 2D materials; coherence length; nonlinear optics
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Funding
- Russian Ministry of Education and Science [14.W03.31.0008]
- Russian Science Foundation [20-12-00371]
- Australian Research Council [DE180100070, DP180100077, CE200100010]
- University of Technology Sydney (Seed Funding Grant)
- MSU Quantum Technology Centre
- Foundation for the Advancement of Theoretical Physics and Mathematics BASIS [19-2-6-28-1]
- Russian Foundation for Basic Research [19-0200876]
- Asian Office of Aerospace Research and Development [FA2386-20-1-4014]
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Hexagonal boron nitride (hBN) is a layered material with remarkable optical features, making it an important building block for novel photonics applications. It exhibits a high third-order nonlinearity similarity to Si3N4, highlighting its potential for nonlinear applications.
Hexagonal boron nitride (hBN) is a layered material that exhibits remarkable optical features in the UV visible, and IR ranges, attractive for applications in modern photonics. Being transparent in a wide spectral range, hBN is now considered an important building block for novel integrated photonic platforms, thus requiring the study of its optical properties. In this work, we report on the measurements of hBN optical cubic nonlinearity chi((3)) equal to 8.4 X 10(-21) m(2)/V-2 by observing the third-harmonic generation for 1080 nm pump wavelength from mechanically exfoliated hBN flakes with thicknesses varying from 5 to 170 nm. The third-order susceptibility of hBN is close to that of Si3N4 highlighting the potential of hBN for nonlinear applications.
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