Mechanism of brightness enhancement in multimode LD-pumped graded-index fiber Raman lasers: numerical modeling

Standard

Mechanism of brightness enhancement in multimode LD-pumped graded-index fiber Raman lasers: numerical modeling. / Sidelnikov, Oleg S.; Podivilov, Evgeny V.; Fedoruk, Mikhail P. et al.

In: Optics Express, Vol. 30, No. 5, 28.02.2022, p. 8212-8221.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{3e22f86a2f8b4d349e4534862d3e001a,

title = "Mechanism of brightness enhancement in multimode LD-pumped graded-index fiber Raman lasers: numerical modeling",

abstract = "We develop a comprehensive theory for describing the experimental beam profiles from multimode fiber Raman lasers. We take into account the presence of random linear mode coupling, Kerr beam self-cleaning and intra-cavity spatial filtering. All of these factors play a decisive role in shaping the Stokes beam, which has a predominant fundamental mode content. Although the highly multimode pump beam is strongly depleted, it remains almost insensitive to the different physical effects. As a result, the intensity of the output Stokes beam is an order of magnitude higher than the pump intensity at its maximum, in quantitative agreement with the experimental results and in contrast with the simplified balance model.",

author = "Sidelnikov, {Oleg S.} and Podivilov, {Evgeny V.} and Fedoruk, {Mikhail P.} and Kuznetsov, {Alexey G.} and Stefan Wabnitz and Babin, {Sergey A.}",

note = "Funding Information: Funding. European Research Council (740355); Ministry of Education and Science of the Russian Federation (14.Y26.31.0017, FSUS-2020-0034); Russian Foundation for Basic Research (18-52-7822); Russian Science Foundation (20-11-20040, 21-42-00019). Funding Information: Acknowledgments. The work of M.P.F. (theoretical analysis) was supported by the Russian Science Foundation (Project No. 20-11-20040), the work of O.S.S. (mathematical modelling) was supported by the State Assignment for Fundamental Research (No. FSUS-2020-0034). The work of E.V.P., S.A.B. and S.W., related to the comparison of the adequacy of numerical models and their applicability for describing the experiment, was supported by the Ministry of Science and Higher Education of the Russian Federation (Project No. 14.Y26.31.0017) and Russian Foundation for Basic Research (grant 18-52-7822) together with the work of A.G.K. supported by Russian Science Foundation (grant 21-42-00019). S.W. was also supported by the European Research Council (grant no. 740355). Publisher Copyright: {\textcopyright} 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.",

year = "2022",

month = feb,

day = "28",

doi = "10.1364/OE.449773",

language = "English",

volume = "30",

pages = "8212--8221",

journal = "Optics Express",

issn = "1094-4087",

publisher = "The Optical Society",

number = "5",

}

RIS

TY - JOUR

T1 - Mechanism of brightness enhancement in multimode LD-pumped graded-index fiber Raman lasers: numerical modeling

AU - Sidelnikov, Oleg S.

AU - Podivilov, Evgeny V.

AU - Fedoruk, Mikhail P.

AU - Kuznetsov, Alexey G.

AU - Wabnitz, Stefan

AU - Babin, Sergey A.

N1 - Funding Information: Funding. European Research Council (740355); Ministry of Education and Science of the Russian Federation (14.Y26.31.0017, FSUS-2020-0034); Russian Foundation for Basic Research (18-52-7822); Russian Science Foundation (20-11-20040, 21-42-00019). Funding Information: Acknowledgments. The work of M.P.F. (theoretical analysis) was supported by the Russian Science Foundation (Project No. 20-11-20040), the work of O.S.S. (mathematical modelling) was supported by the State Assignment for Fundamental Research (No. FSUS-2020-0034). The work of E.V.P., S.A.B. and S.W., related to the comparison of the adequacy of numerical models and their applicability for describing the experiment, was supported by the Ministry of Science and Higher Education of the Russian Federation (Project No. 14.Y26.31.0017) and Russian Foundation for Basic Research (grant 18-52-7822) together with the work of A.G.K. supported by Russian Science Foundation (grant 21-42-00019). S.W. was also supported by the European Research Council (grant no. 740355). Publisher Copyright: © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

PY - 2022/2/28

Y1 - 2022/2/28

N2 - We develop a comprehensive theory for describing the experimental beam profiles from multimode fiber Raman lasers. We take into account the presence of random linear mode coupling, Kerr beam self-cleaning and intra-cavity spatial filtering. All of these factors play a decisive role in shaping the Stokes beam, which has a predominant fundamental mode content. Although the highly multimode pump beam is strongly depleted, it remains almost insensitive to the different physical effects. As a result, the intensity of the output Stokes beam is an order of magnitude higher than the pump intensity at its maximum, in quantitative agreement with the experimental results and in contrast with the simplified balance model.

AB - We develop a comprehensive theory for describing the experimental beam profiles from multimode fiber Raman lasers. We take into account the presence of random linear mode coupling, Kerr beam self-cleaning and intra-cavity spatial filtering. All of these factors play a decisive role in shaping the Stokes beam, which has a predominant fundamental mode content. Although the highly multimode pump beam is strongly depleted, it remains almost insensitive to the different physical effects. As a result, the intensity of the output Stokes beam is an order of magnitude higher than the pump intensity at its maximum, in quantitative agreement with the experimental results and in contrast with the simplified balance model.

UR - http://www.scopus.com/inward/record.url?scp=85125433587&partnerID=8YFLogxK

U2 - 10.1364/OE.449773

DO - 10.1364/OE.449773

M3 - Article

C2 - 35299567

AN - SCOPUS:85125433587

VL - 30

SP - 8212

EP - 8221

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 5

ER -

ID: 35598284