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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Shock wave far-field in ordered and disordered nonlocal media.
S Gentilini1, N Ghofraniha, E DelRe
1ISC-CNR, Dipartimento di Fisica-Università di Roma La Sapienza, Roma, Italy. silvia.gentilini@roma1.infn.it
Optics Express
|November 29, 2012
Summary
We studied how light beams create shock waves in disordered materials. The study quantifies the power needed to create these nonlinear optical phenomena, revealing key interactions.
Area of Science:
- Nonlinear optics
- Condensed matter physics
- Wave propagation
Background:
- Spatial dispersive shock waves arise from the interplay of nonlinearity and dispersion.
- Disordered media introduce randomness that affects wave propagation.
- Nonlocal nonlinear media exhibit response dependent on a region, not just a point.
Purpose of the Study:
- To investigate the far-field characteristics of spatial dispersive shock waves.
- To analyze shock wave generation in nonlinear nonlocal colloidal disordered media.
- To quantify the influence of nonlinearity and structural randomness on shock wave formation.
Main Methods:
- Theoretical modeling of wave propagation in disordered nonlinear media.
- Numerical simulations to capture the complex interactions.
- Analysis of the far-field patterns generated by the shock wave.
Main Results:
- The study identifies the threshold power required for shock wave generation.
- The interplay between nonlinearity and randomness is shown to be critical.
- Far-field characteristics are analyzed in relation to material properties.
Conclusions:
- The threshold power is a key parameter for understanding shock wave formation in these systems.
- Structural randomness significantly impacts the conditions for shock wave occurrence.
- Findings provide insights into light propagation in complex nonlinear media.
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