Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 127, Issue 5, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-021-04450-8
Keywords
Electrostriction; Stimulated Brillouin scattering; Metamaterial; Homogenization; Third-order nonlinear optical susceptibility
Funding
- NSAF, China [U1830123]
- National Natural Science Foundation of China [61627802]
- High-Level Educational Innovation Team Introduction Plan of Jiangsu, China
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This paper presents a theoretical method for calculating the third-order nonlinear optical susceptibility induced by electrostriction in metamaterials, demonstrating electrostriction as the predominant mechanism in modulating TNSRE. By investigating various effective elastic and optical models, the study provides insights into the frequency dependence of TNSRE, showing a decrease at higher frequencies.
In this paper, a theoretical method is presented to calculate third-order nonlinear optical susceptibility resulting from electrostriction (TNSRE) in metamaterials. The presented model is based on homogenization and effective medium theory. We have demonstrated that electrostriction is the dominant mechanism in the enhancement and suppression of the TNSRE. To provide a comprehensive framework that includes different types of metamaterials, we examined all known effective elastic models and effective optical models separately. The numerical results showed that TNSRE has a little dependency on the frequency which decreases at higher frequencies.
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