Issue |
EPL
Volume 148, Number 1, October 2024
|
|
---|---|---|
Article Number | 13001 | |
Number of page(s) | 6 | |
Section | Fluid and nonlinear dynamics | |
DOI | https://doi.org/10.1209/0295-5075/ad7ef6 | |
Published online | 15 October 2024 |
Spatiotemporal instability and optical filament formation in metamaterials
1 Department of Physics, Synod College - Shillong 793002, India
2 Department of Physics, KAHM Unity Women's College, Manjeri (Affiliated to University of Calicut) Kerala 676122, India
3 Department of Physics, Pondicherry University - Pondicherry 605014, India
4 College of Engineering, Nuclear Engineering Department, King Abdulaziz University - Jeddah 21589, Saudi Arabia
Received: 3 July 2024
Accepted: 24 September 2024
This study investigates the spatiotemporal instability in artificial metamaterials, with a focus on generating ultrashort pulses or light filaments. We identify the parametric regions where the metamaterial exhibits spatiotemporal instability, enabling the generation of ultrashort pulses. Our approach involves modeling nonlinear pulse propagation in the metamaterial using a (3+1)-dimensional nonlinear Schrödinger equation and performing a standard linear stability analysis to explore the spatiotemporal instability. Leveraging the engineering freedom to tailor the material parameters, we numerically demonstrate the generation of ultrashort pulses through spatiotemporal instability.
© 2024 EPLA
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