| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 15, Number 1, 2019
|
|
|---|---|---|
| Article Number | 22 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1186/s41476-019-0118-z | |
| Published online | 16 October 2019 | |
Research
Inducing tunable single-mode operation of Fabry-Perot semiconductor laser coupled with very-short cavity with selective optical feedback
1
Department of Physics, Faculty of Science, King Abdulaziz University, 80203, 21589, Jeddah, Saudi Arabia
2
Department of Physics, Faculty of Science, Minia University, Egypt, 61519, Minia, Egypt
Received:
17
June
2019
Accepted:
16
September
2019
We report on achieving tuned single mode operation of a multimode semiconductor laser by coupling it to a very-short external cavity with selective feedback. We show that the induced uniform feedback light from the very-short external cavity can induce single-mode oscillation over a broad range of optical feedback. Then by applying selective external to the optimum settings of the single-mode oscillation, we predict tuning of the single-mode output over a wavelength range of ~ 20 nm by detuning the peak wavelength of optical feedback from the central wavelength of the modal gain. The study is based on modeling of the dynamics of multimode semiconductor laser subject to selective optical feedback. The model takes into account mechanisms of both self- and cross-modal gain suppression, and the study is concerned with the very-short external cavity that corresponds to stable continuous-wave (CW) operation.
Key words: Multimode laser / Optical feedback / Optical gain / Semiconductor laser
© The Author(s) 2019
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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