Stabilizing Brillouin lasing in high-Q optical fiber cavity pumped from self-injection locked DFB laser

J. L. Bueno-Escobedo; S. V. Miridonov; Ma. Carmen Maya-Sánchez; D. A. Korobko; I. O. Zolotovskii; A. A. Fotiadi

doi:10.1117/12.2621113

20 May 2022 Stabilizing Brillouin lasing in high-Q optical fiber cavity pumped from self-injection locked DFB laser

J. L. Bueno-Escobedo, S. V. Miridonov, Ma. Carmen Maya-Sánchez, D. A. Korobko, I. O. Zolotovskii, A. A. Fotiadi

Proceedings Volume 12141, Semiconductor Lasers and Laser Dynamics X; 121410J (2022) https://doi.org/10.1117/12.2621113
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

We report on a low-cost Brillouin fiber ring laser pumped from an actively stabilized self-injection locked distributed feedback (DFB) laser diode. Locking of the commercial DFB laser to a ~11-m-length high-Q-factor fiber-optic ring cavity leads to ~10,000-fold narrowing of the laser Lorentzian linewidth down to 400 Hz. Such pump laser operation inside the ring cavity forces the cavity to host Brillouin lasing enabling the laser threshold power as low as ~1.5 mW. The laser operation is perfectly stabilized by active optoelectronic feedback driven by a simple microcontroller. The laser delivers radiation at Stokes frequency with the Lorentzian linewidth reduced down to ~75 Hz and a phase noise less than –100 dBc/Hz (<30 kHz). The reported laser configuration is of great interest for many laser applications where a narrow sub-kHz linewidth, simple design and low cost are important.

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J. L. Bueno-Escobedo, S. V. Miridonov, Ma. Carmen Maya-Sánchez, D. A. Korobko, I. O. Zolotovskii, and A. A. Fotiadi "Stabilizing Brillouin lasing in high-Q optical fiber cavity pumped from self-injection locked DFB laser", Proc. SPIE 12141, Semiconductor Lasers and Laser Dynamics X, 121410J (20 May 2022); https://doi.org/10.1117/12.2621113

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