Τίτλος:
Tailoring coupling between light and spin waves with dual
photonic-magnonic resonant layered structures
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We report on judiciously designed stratified periodic structures of
magnetic dielectric materials with a localized defect layer, which are
able to concurrently confine light and spin waves in the same
ultra-small defect region for a long time period, thus resulting in
enhanced photon-magnon interaction and large dynamic optical frequency
shift. Our results for a specific realization of such a one-dimensional,
so-called photomagnonic, crystal magnetized at saturation perpendicular
to the interfaces, obtained by means of rigorous calculations using
scattering-matrix techniques, show that the inherently weak coupling
between visible/near-infrared light and GHz-frequency spin waves can be
greatly increased leading to strong modulation of the optical field
through multi-magnon exchange mechanisms. Such novel multifunctional
composite materials offer a promising platform for tailoring
light-spin-wave coupling in view of fast and energy-efficient
spin-optical information processing applications.
Συγγραφείς:
Pantazopoulos, Petros-Andreas
Papanikolaou, Nikolaos
Stefanou,
Nikolaos
Περιοδικό:
Journal of Optical Networking
Εκδότης:
IOP Publishing Ltd
Λέξεις-κλειδιά:
photomagnonic crystal; inelastic light scattering; magneto-optics; spin
waves
DOI:
10.1088/2040-8986/aaf2c1
