Generation of radiation with a tunable comb spectrum in ring fiber cavities based on active photonic crystal structures

By | 15.09.2024

A. S. Abramov, D. A. Korobko, V. A. Lapin, P. P. Moronov

  • Ulyanovsk State University, 432970, Ulyanovsk, Russia
Abstract: We consider generation of radiation with a comb spectrum in a ring fiber cavity with harmonic mode locking provided by dissipative four-wave mixing. The main element of the laser system cavity is an amplifying one-dimensional photonic crystal, which combines the properties of an intracavity filter and a power amplifier. Using standard propagation equations describing signal conversion in a ring cavity and an output fiber stage, we demonstrate a possibility of employing the proposed model as a broadband frequency comb generator with a controlled repetition rate of generated signals.
Keywords: harmonic mode locking, dissipative four-wave mixing, high-repetition-rate optical pulses, active photonic crystal structure, photonic bandgap, comb spectrum generation
The work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. FEUF-2023-0003, scholarship of the President of the Russian Federation SP-4058.2021.5) and by the Russian Science Foundation (project no. 23-22-00412).
Received: 06.09.2023
Revised: 21.11.2023
Accepted: 21.11.2023