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We performed a numerical study of narrow spectral modes, emerging in radiation of a Raman fiber laser with randomly distributed feedback. The model based on set of nonlinear Schrodinger equations with coherent Rayleigh backscattering reproduces the radiation spectrum consisting of narrow modes just above...
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Low-spatial coherence vortex beam generation by random distributed feedback fibre laser 2022, Optik Citation Excerpt : As a type of fibre laser without a resonant cavity, random distributed feedback fibre lasers (RDFB-FLs) (firstly reported by Turitsyn et al. [21]) have been widely applied in...
(NA)=0.25, mode field diameter 5.7 μm), in which a randomly distributed phase error grating was written. Using this procedure, a very high number of scatterers (≫103) was implemented, improving the fibre randomness. A fibre length of 30 cm was used in the present work. The ...
V. Intensity dynamics and statistical properties of random distributed feedback fiber laser. Opt. Lett. 40, 1783–1786 (2015). 32. Antenucci, F., Conti, C., Crisanti, A. & Leuzzi, L. General phase diagram of multimodal ordered and disordered lasers in closed and open cavities. Phys. ...
Random distributed feedback fibre laser - CALIS 热度: Feedback-directedRandomTestGeneration CarlosPacheco 1 ,ShuvenduK.Lahiri 2 ,MichaelD.Ernst 1 ,andThomasBall 2 1 MITCSAIL, 2 MicrosoftResearch {cpacheco,mernst}@csail.mit.edu,{shuvendu,tball}@microsoft.com ...
random distributed feedback. The random generation in multimode GIF appears to be more efficient and provides higher beam quality than the cascaded generation in conventional RFL scheme with nested FBG cavities for all Stokes orders. So, the developed laser combines three types of beam cleaning ...
Consider a random fibre laser of lengthLthat is an optically pumped long span of a standard telecommunication fibre. Weak random distributed feedback is caused by the Rayleigh scattering in a fibre core on refractive index inhomogeneities, and the Raman gain is induced by the pump radiation, join...
In this study, we experimentally demonstrated a radially polarised vortex beam with extremely low spatial coherence using a random distributed feedback fibre laser (RDFB-FL). The results show that the spatial coherence of vortex beams can be reduced in an RDFB-FL and further reduced by ...