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Updated: Jan 16, 2026
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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
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Femtosecond-Laser-Delamination Cavities for Resonant Acousto-Magneto-Plasmonics
Pavel Varlamov1, Akira Barros1, Aditya Swaminathan1
1LSI, Ecole Polytechnique, CEA/DRF/IRAMIS, CNRS, Institut Polytechnique de Paris, 91128 Palaiseau, France.
Physical Review Letters
|October 5, 2025
Summary
This study introduces an all-optical platform for fabricating and characterizing laser-delaminated ferromagnetic materials. It enables the study of unique acoustic and plasmonic properties in novel nanostructures.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Femtosecond lasers are used for material modification and spectroscopy separately.
- This separation limits the study of laser-fabricated material properties.
Purpose of the Study:
- To present an all-optical platform combining fabrication and characterization of laser-delaminated ferromagnetic materials.
- To explore the physical properties of these novel nanostructures.
Main Methods:
- Single-shot femtosecond laser delamination to create membranes and cavities.
- Quasi in situ characterization using interferometric, photo-acoustic, and magneto-plasmonic microscopy.
- Numerical modeling for data interpretation.
Main Results:
- Fabrication of nano to micrometer sized ferromagnetic cavities.
- Observation of high-Q acoustic resonances and ultrahigh frequency coherent phonon modes (>100 GHz) in Ni and Fe cavities.
- Demonstration of magnetically controlled surface plasmon resonance in Co-Au cavities.
Conclusions:
- The platform enables simultaneous fabrication and characterization of laser-induced nanostructures.
- This approach provides access to novel physical properties and opens avenues for designing tunable nanoscale architectures.
