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5 March 2021 Non-linear optics in KLTN supercrystals
Eugenio DelRe
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Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 116700L (2021) https://doi.org/10.1117/12.2585157
Event: SPIE LASE, 2021, Online Only
Abstract
As KLTN undergoes its room-temperature transition from a cubic to a tetragonal phase, the emerging ferroelectric domains spontaneously lock into a three-dimensional highly organized lattice formed by 3D vortex-like structures. The result is a material, a ferroelectric supercrystal, with unexpected broadband optical properties, such as giant refraction. I will describe our explorations of enhanced nonlinear optical properties of the supercrystal, with emphasis on second-harmonic generation. Experiments indicate the emergence of a constraint-free wavelength conversion in the form of non-linear Cherenkov emission characterized by a broad angular and spectral acceptance, absence of chromatic walk-off, and negligible diffraction.
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Eugenio DelRe "Non-linear optics in KLTN supercrystals", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 116700L (5 March 2021); https://doi.org/10.1117/12.2585157
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KEYWORDS
Nonlinear optics
Colorimetry
Diffraction
Light wave propagation
Perovskite
Polarization
Refraction
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