Chiara Trovatello

Spatiotemporal imaging of nonlinear optics in van der Waals waveguides - Nature Nanotechnology An optical method images nonlinear optical processes in waveguides with femtosecond and nanometre precision. The approach is used to achieve phase-matched second-harmonic generation in 3R-MoS2 wavegui...

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Spatiotemporal imaging of nonlinear optics in van der Waals waveguides.

"An optical method images nonlinear processes in waveguides with femtosecond and nanometre precision, enabling phase-matched second-harmonic generation in 3R-MoS2 waveguides."

www.nature.com/articles/s41...

15.01.2025 12:03 — 👍 5    🔁 2    💬 0    📌 0

Spatiotemporal imaging of nonlinear optics in van der Waals waveguides - Nature Nanotechnology An optical method images nonlinear optical processes in waveguides with femtosecond and nanometre precision. The approach is used to achieve phase-matched second-harmonic generation in 3R-MoS2 wavegui...

Here we use spatiotemporal imaging to provide phase-matching angles, mode profiles and losses in 3R-MoS2 waveguides, showing birefringent phase matching in both multi- and single-mode waveguides.
Out today in @naturenano.bsky.social www.nature.com/articles/s41...
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15.01.2025 15:00 — 👍 1    🔁 1    💬 0    📌 0

Quasi-phase-matched up- and down-conversion in periodically poled layered semiconductors - Nature Photonics Researchers created a periodically poled van der Waals semiconductor (3R-MoS2) and achieved a macroscopic frequency conversion efficiency of 0.03% over a thickness of 3.4 μm. The quasi-phase-matched s...

Here we realize ultracompact entangled photon sources by periodically poling 2D semiconductors (3R-MoS2), demonstrating quasi-phase-matched up- and down-conversion over micron-thick pathlengths.
Out today in @naturephotonics.bsky.social www.nature.com/articles/s41...
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14.01.2025 08:51 — 👍 4    🔁 0    💬 0    📌 0