Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
Mechanisms of beam clean up at Raman conversion of multimode radiation in graded-index fibers. / Kuznetsov, Alexey G.; Kablukov, Sergey I.; Podivilov, Evgeniy V. и др.
Nonlinear Frequency Generation and Conversion: Materials and Devices XX. ред. / Peter G. Schunemann; Kenneth L. Schepler. SPIE, 2021. 116700K (Proceedings of SPIE - The International Society for Optical Engineering; Том 11670).Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › научная › Рецензирование
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TY - GEN
T1 - Mechanisms of beam clean up at Raman conversion of multimode radiation in graded-index fibers
AU - Kuznetsov, Alexey G.
AU - Kablukov, Sergey I.
AU - Podivilov, Evgeniy V.
AU - Babin, Sergey A.
N1 - Funding Information: The study is supported by Russian Science Foundation (№21-42-00019). Publisher Copyright: © 2021 SPIE. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021
Y1 - 2021
N2 - As shown recently, highly multimode (M2∼30) radiation of laser diodes may be converted in graded-index fibers into high-quality (M2≤2) Raman beam at Stokes-shifted wavelength. Here we experimentally study output beam profiles for the transmitted pump and generated Stokes beams and develop an analytical balance model enabling theoretical beam profiles both near the Raman threshold and well above the threshold where significant depletion of the pump beam occurs due to the Raman conversion. Comparison of the theory and experiment allows for the identification of main mechanisms of the Raman beam clean up in this system, including linear and nonlinear effects.
AB - As shown recently, highly multimode (M2∼30) radiation of laser diodes may be converted in graded-index fibers into high-quality (M2≤2) Raman beam at Stokes-shifted wavelength. Here we experimentally study output beam profiles for the transmitted pump and generated Stokes beams and develop an analytical balance model enabling theoretical beam profiles both near the Raman threshold and well above the threshold where significant depletion of the pump beam occurs due to the Raman conversion. Comparison of the theory and experiment allows for the identification of main mechanisms of the Raman beam clean up in this system, including linear and nonlinear effects.
KW - Beam clean-up
KW - Diode pumping
KW - FBG
KW - Fiber laser
KW - Graded-index fiber
KW - Mode selection
KW - Multimode
KW - Pump depletion
KW - Raman laser
KW - Random coupling
UR - http://www.scopus.com/inward/record.url?scp=85107032495&partnerID=8YFLogxK
U2 - 10.1117/12.2577685
DO - 10.1117/12.2577685
M3 - Conference contribution
AN - SCOPUS:85107032495
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Nonlinear Frequency Generation and Conversion
A2 - Schunemann, Peter G.
A2 - Schepler, Kenneth L.
PB - SPIE
T2 - Nonlinear Frequency Generation and Conversion: Materials and Devices XX 2021
Y2 - 6 March 2021 through 11 March 2021
ER -
ID: 28728286