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- Title
Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber.
- Authors
Vatnik, Ilya D.; Gorbunov, Oleg A.; Churkin, Dmitry V.
- 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.
- Subjects
FIBER lasers; OPTICAL measurements; SINGLE-mode optical fibers; RAMAN lasers; SPECTRAL lines; RADIATION
- Publication
Photonics, 2024, Vol 11, Issue 1, p2
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics11010002