Direct measurements of localized spectral modes in random distributed feedback fiber laser

Direct measurements of localized spectral modes in random distributed feedback fiber laser

We present observation of ultra-narrow spectral modes in the generation of the random fiber laser by using a technique of optical heterodyning in real-time. We found that such modes have a spectral width below 3 MHz. The modes are spatially extended over the whole cavity and remain for tens of round...

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Bibliographic Details
Main Authors: Artem E. Kirik, Ilya D. Vatnik, Dmitry V. Churkin
Format: Article
Language:English
Published: Elsevier 2021-09-01
Series:Results in Physics
Subjects:
Fiber laser
Random laser
Raman laser
Rayleigh backscattering
Online Access:http://www.sciencedirect.com/science/article/pii/S2211379721007403
Description
Summary:We present observation of ultra-narrow spectral modes in the generation of the random fiber laser by using a technique of optical heterodyning in real-time. We found that such modes have a spectral width below 3 MHz. The modes are spatially extended over the whole cavity and remain for tens of roundtrip times.
ISSN:2211-3797

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