Author(s): Li, YL (Li, Ya-Li); Ma, CG (Ma, Chun-Guang); Xiao, JL (Xiao, Jin-Long); Wang, T (Wang, Ting); Wu, JL (Wu, Ji-Liang); Yang, YD (Yang, Yue-De); Huang, YZ (Huang, Yong-Zhen)

Source: OPTICS EXPRESS Volume: 30 Issue: 2 Pages: 2122-2130 DOI: 10.1364/OE.449707 Published: JAN 17 2022

Abstract: A tri-mode micro-square laser under optical feedback is proposed and demonstrated to generate chaos with the broadband flat microwave spectrum. By adjusting lasing mode intensities, frequency intervals, and optical feedback strength, we can enhance the chaotic bandwidth significantly. The existence of two mode-beating peaks makes the flat bandwidth much larger than the relaxation oscillation frequency. Effective bandwidth of 35.3 GHz is experimentally achieved with the flatness of 8.3 dB from the chaotic output spectrum of the tri-mode mode laser under optical feedback. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Accession Number: WOS:000745037500115

ISSN: 1094-4087

Full Text: https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-2-2122&id=467894