Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber

Vatnik, Ilya D.; Gorbunov, Oleg A.; Churkin, Dmitry V.

doi:10.3390/photonics11010002

Open AccessArticle

Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber

by

Ilya D. Vatnik

^*

,

Oleg A. Gorbunov

and

Dmitry V. Churkin

Physics Department, Novosibirsk State University, 630090 Novosibirsk, Russia

^*

Author to whom correspondence should be addressed.

Photonics 2024, 11(1), 2; https://doi.org/10.3390/photonics11010002

Submission received: 2 November 2023 / Revised: 13 December 2023 / Accepted: 14 December 2023 / Published: 19 December 2023

(This article belongs to the Special Issue A Recent Progress in Single Frequency Lasers: Development and Applications)

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Abstract

We present a new design of a random Raman fiber laser based on a graded-index multimode fiber as the media composing the cavity that allows the generation of narrow spectral lines. We carried out spectral measurements using an optical heterodyning technique by projecting multimode radiation onto the fundamental mode of a standard single-mode fiber. The measurements confirmed the presence of localized ultra-narrow short-lived modes. We measured the powers of the modes and found it to be significantly higher (up to 25 mW) compared with those in a random Raman laser based on a single-mode fiber (<2 mW), while preserving the same typical lifetimes of a few milliseconds.

Keywords: random feedback; random laser; Raman fiber laser

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MDPI and ACS Style

Vatnik, I.D.; Gorbunov, O.A.; Churkin, D.V. Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber. Photonics 2024, 11, 2. https://doi.org/10.3390/photonics11010002

AMA Style

Vatnik ID, Gorbunov OA, Churkin DV. Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber. Photonics. 2024; 11(1):2. https://doi.org/10.3390/photonics11010002

Chicago/Turabian Style

Vatnik, Ilya D., Oleg A. Gorbunov, and Dmitry V. Churkin. 2024. "Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber" Photonics 11, no. 1: 2. https://doi.org/10.3390/photonics11010002

APA Style

Vatnik, I. D., Gorbunov, O. A., & Churkin, D. V. (2024). Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber. Photonics, 11(1), 2. https://doi.org/10.3390/photonics11010002

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber

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