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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Magnetic imaging in photonic crystal microcavities
Silvia Vignolini1, Francesca Intonti, Francesco Riboli
1European Laboratory for Non-linear Spectroscopy, 50019 Sesto Fiorentino (FI), Italy. vignolini@lens.unifi.it
Physical Review Letters
|September 28, 2010
Summary
We show how optical frequencies can create magnetic interactions between microcavities and microscopy probes. This allows mapping and controlling magnetic fields in photonic structures for optical response tuning.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Photonic crystal microcavities exhibit unique optical properties.
- Controlling magnetic components of light-matter interactions is crucial for advanced optical devices.
Purpose of the Study:
- To demonstrate a nonresonant magnetic interaction at optical frequencies.
- To enable mapping and control of magnetic field components in microcavities.
Main Methods:
- Utilizing a metallized near-field microscopy probe.
- Exploiting the magnetic response of a metal-coated tip acting as a conductive ring.
- Measuring resonance frequency shifts.
Main Results:
- Established nonresonant magnetic interaction between a photonic crystal microcavity and a probe.
- Demonstrated the probe's ability to induce an opposing magnetic response.
- Showcased frequency shifts correlating with magnetic field intensity distribution.
Conclusions:
- The demonstrated magnetic interaction offers a method for mapping microcavity magnetic fields.
- This technique allows for fine-tuning the optical response of photonic structures.
- Potential applications in optical sensing and device manipulation.
