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Fano meets Stokes: Four-order-of-magnitude enhancement of asymmetric Brillouin light scattering spectra by Rafał Białek; Thomas Vasileiadis; Mikołaj Pochylski; Bartłomiej Graczykowski is a Engineering article available to read on EtoBox.
What is Fano meets Stokes: Four-order-of-magnitude enhancement of asymmetric Brillouin light scattering spectra about?
Observation of Fano resonances in various physical phenomena is usually ascribed to the coupling of discrete states with background continuum, as it has already been reported for various physical phenomena. Here, we report on Fano lineshapes of nonthermal GHz phonons generated and observed with pumped Brillouin light scattering in gold-silicon thin membranes, overlapping the broad zero-shift background of yet questionable origin. The system's broken mid-plane symmetry enabled the generation of coherent quasi-symmetric and quasi-antisymmetric Lamb acoustic waves/phonons, leading to the four orders-of-magnitude enhancement of Brillouin light scattering. Notably, the membrane asymmetry resulted also in the mode-dependent Stokes and anti-Stokes Fano lineshapes asymmetry.
Who reads Fano meets Stokes: Four-order-of-magnitude enhancement of asymmetric Brillouin light scattering spectra?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Rafał Białek; Thomas Vasileiadis; Mikołaj Pochylski; Bartłomiej Graczykowski
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Engineering (Physical Sciences)