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Unconventional optical response of time-domain Fibonacci quasicrystals
Optics Letters
|August 2, 2025
Summary
We studied amplified light wave transmission in Fibonacci quasicrystals (FQCs). Light localization in FQCs requires a stable reflection band, not one that flips.
Area of Science:
- Optics
- Condensed Matter Physics
- Materials Science
Background:
- Fibonacci quasicrystals (FQCs) exhibit unique wave propagation properties due to their quasi-periodic structure.
- Understanding light-matter interactions in FQCs is crucial for developing novel optical devices.
Purpose of the Study:
- To investigate the propagation and localization of light waves in time-domain Fibonacci quasicrystals.
- To explore the unusual reflectivity and transmission characteristics of FQCs.
Main Methods:
- Computational study of light wave propagation in time-domain Fibonacci quasicrystals.
- Analysis of transmission and reflection spectra under varying sequence conditions.
Main Results:
- Demonstrated transmission of amplified optical waves through FQCs.
- Observed unusual reflectivity with band flipping and amplification in alternating sequences.
- Found that light localization is contingent upon a non-flipping reflection band.
- Highlighted spectral modifications in sequence-based FQCs compared to conventional ones.
Conclusions:
- Time-domain FQCs offer enhanced capabilities for optical applications.
- The study provides insights into controlling light localization and amplification in quasi-periodic structures.
- Findings support applications in optical frequency shifters and terahertz radiation.
