5 October 2023
Viola Valentina Vogler-Neuling,
First bottom-up fabricated 3D nonlinear photonic crystals in woodpile geometry
Features 8 layers with 1 μm xy-periodicity and 300 nm z-periodicity
Covers 5.3x104 μm2 surface area - 100x larger than previous works
Opens possibilities for efficient multi-wavelength light generation
Provides platform to study enhanced nonlinear optics
A New Dimension: Large-Scale 3D Photonic Crystals Unlock Nonlinear Optical Effects
This paper reports a breakthrough in fabricating large-scale 3D nonlinear photonic crystals, enabling enhanced nonlinear optical effects like efficient harmonic generation. Using soft nanoimprint lithography on sol-gel-derived barium titanate, woodpile crystals with 8 layers, 1 μm xy-periodicity, and 300 nm z-periodicity across 5.3x104 μm2 were achieved - 100x larger than previous works.
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