Research output: Contribution to journal › Article › peer-review
Multimode LD-pumped all-fiber Raman laser with excellent quality of 2nd-order Stokes output beam at 1019 nm. / KUZNETSOV, A. G.; NEMOV, I. N.; WOLF, A. A. et al.
In: Optics Express, Vol. 29, No. 11, 24.05.2021, p. 17573-17580.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Multimode LD-pumped all-fiber Raman laser with excellent quality of 2nd-order Stokes output beam at 1019 nm
AU - KUZNETSOV, A. G.
AU - NEMOV, I. N.
AU - WOLF, A. A.
AU - KABLUKOV, S. I.
AU - BABIN, S. A.
N1 - Publisher Copyright: © 2021 Optical Society of America. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5/24
Y1 - 2021/5/24
N2 - A multimode all-fiber Raman laser enabling cascaded generation of high-quality 1019-nm output beam at direct pumping by highly-multimode (M2>30) 940-nm laser diodes has been demonstrated. The laser is made of a 100/140 graded-index fiber with special in-fiber Bragg gratings which secure sequential generation of the 1st (976 nm) and 2nd (1019 nm) Stokes orders. Comparing different 1019-nm cavity structures shows that the half-open cavity with one FBG and distributed feedback via random Rayleigh backscattering provides excellent quality (M2∼1.3) with higher slope efficiency of pump-to-2nd Stokes conversion than in the conventional 2-FBG cavity. The maximum achieved slope efficiency amounts to about 40% at output powers of up to 12 W limited by the 3rd Stokes generation.
AB - A multimode all-fiber Raman laser enabling cascaded generation of high-quality 1019-nm output beam at direct pumping by highly-multimode (M2>30) 940-nm laser diodes has been demonstrated. The laser is made of a 100/140 graded-index fiber with special in-fiber Bragg gratings which secure sequential generation of the 1st (976 nm) and 2nd (1019 nm) Stokes orders. Comparing different 1019-nm cavity structures shows that the half-open cavity with one FBG and distributed feedback via random Rayleigh backscattering provides excellent quality (M2∼1.3) with higher slope efficiency of pump-to-2nd Stokes conversion than in the conventional 2-FBG cavity. The maximum achieved slope efficiency amounts to about 40% at output powers of up to 12 W limited by the 3rd Stokes generation.
UR - http://www.scopus.com/inward/record.url?scp=85106553012&partnerID=8YFLogxK
U2 - 10.1364/OE.425639
DO - 10.1364/OE.425639
M3 - Article
C2 - 34154297
AN - SCOPUS:85106553012
VL - 29
SP - 17573
EP - 17580
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 11
ER -
ID: 28728184