Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber
Ilya D. Vatnik,
Oleg A. Gorbunov,
Dmitry V. Churkin
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… Show more
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