Period-doubled Floquet solitons

Mukherjee, S and Rechtsman, MC (2023) Period-doubled Floquet solitons. In: Optica, 10 (10). pp. 1310-1315.

	PDF opt_10_10_2023 - Published Version Download (6MB)
	PDF opt_10_10_2023_sup - Published Supplemental Material Download (1MB)

Abstract

Floquet solitons are shape-preserving nonlinear wave packets exhibiting periodic micromotion during propagation. Here we propose and experimentally demonstrate a family of period-doubled Floquet solitons in the bulk of a photonic topological insulator. Unlike the traditional Floquet states, the wave function of a period-doubled soliton repeats itself after two periods, apart from an overall phase factor associated with the Floquet quasienergy. Our experimental system consists of periodically modulated honeycomb lattices of optical waveguides fabricated by femtosecond laser writing. We employ a Kerr nonlinearity in which self-focusing gives rise to spatial lattice solitons. Our photonic system constitutes a powerful platform for probing the interplay of time-periodic driving, topology, and nonlinearity in a highly tunable way. © 2023 Optica Publishing Group.

Item Type:	Journal Article
Publication:	Optica
Publisher:	Optica Publishing Group (formerly OSA)
Additional Information:	The copyright for this article belongs to authors.
Keywords:	Honeycomb structures; Optical lattices; Optical waveguides; Wave functions, Experimental system; Floquet; Floquet state; Honeycomb lattices; Micro motion; Nonlinear waves; Phase factor; Quasi-energy; Shape-preserving; Topological insulators, Solitons
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Dec 2024 18:25
Last Modified:	10 Dec 2024 18:25
URI:	http://eprints.iisc.ac.in/id/eprint/85395

Actions (login required)

View Item