Research output: Contribution to journal › Article › peer-review
Distributed Temperature Monitoring Inside Ytterbium DFB and Holmium Fiber Lasers. / Kamynin, Vladimir; Wolf, Alexey; Skvortsov, Mikhail et al.
In: Journal of Lightwave Technology, Vol. 39, No. 18, 15.09.2021, p. 5980-5987.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Distributed Temperature Monitoring Inside Ytterbium DFB and Holmium Fiber Lasers
AU - Kamynin, Vladimir
AU - Wolf, Alexey
AU - Skvortsov, Mikhail
AU - Filatova, Serafima
AU - Kopyeva, Mariya
AU - Vlasov, Alexandr
AU - Tsvetkov, Vladimir
AU - Babin, Sergey
N1 - Funding Information: Manuscript received March 10, 2021; revised May 27, 2021 and June 29, 2021; accepted July 1, 2021. Date of publication July 7, 2021; date of current version September 18, 2021. This work was supported in part by the Russian Foundation for Basic Research under Grant 18-52-7822, and in part by the Russian Ministry of Science and Higher Education under Grant 14.Y26.31.0017. The authors acknowledge the Multiple-Access Center of the IA&E SB RAS (Novosibirsk, Russia) for providing LUNA OBR 4600. (Corresponding author: Vladimir A. Kamynin.) Vladimir A. Kamynin, Serafima A. Filatova, and Vladimir B. Tsvetkov are with the Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia (e-mail: kamyninva@gmail.com; filsim2910@ gmail.com; tsvetkov@lsk.gpi.ru). Publisher Copyright: © 1983-2012 IEEE.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - A distributed temperature monitoring inside a cavity of ytterbium DFB and holmium fiber lasers has been demonstrated with a spatial resolution of 1 and 5 mm, respectively, for the first time to the best of our knowledge. For this, we use an optical backscatter reflectometer, which measures intracore temperature, and compare it with the data of an IR thermographic camera, which measures temperature from the surface of a fiber. In the case of holmium fiber laser pumped at a wavelength of 1125 nm with a power of 6 W, the maximum temperature variation along the ~3-m active fiber reaches ~60 C. In the case of ytterbium DFB laser, we observe a strong inhomogeneity of the temperature along the DFB cavity, which leads to a significant decrease in the lasing efficiency. When pumped by a single-mode laser diode at a wavelength of 976 nm with a power of up to 526 mW, the maximum temperature difference reaches 37 C for the 37-mm DBF cavity.
AB - A distributed temperature monitoring inside a cavity of ytterbium DFB and holmium fiber lasers has been demonstrated with a spatial resolution of 1 and 5 mm, respectively, for the first time to the best of our knowledge. For this, we use an optical backscatter reflectometer, which measures intracore temperature, and compare it with the data of an IR thermographic camera, which measures temperature from the surface of a fiber. In the case of holmium fiber laser pumped at a wavelength of 1125 nm with a power of 6 W, the maximum temperature variation along the ~3-m active fiber reaches ~60 C. In the case of ytterbium DFB laser, we observe a strong inhomogeneity of the temperature along the DFB cavity, which leads to a significant decrease in the lasing efficiency. When pumped by a single-mode laser diode at a wavelength of 976 nm with a power of up to 526 mW, the maximum temperature difference reaches 37 C for the 37-mm DBF cavity.
KW - distributed feedback
KW - Fiber laser
KW - Fiber lasers
KW - holmium
KW - Measurement by laser beam
KW - optical backscattering reflectometry
KW - Optical fiber sensors
KW - Optical fibers
KW - Pump lasers
KW - Temperature distribution
KW - Temperature measurement
KW - temperature sensing
KW - ytterbium
KW - Distributed feedback
UR - http://www.scopus.com/inward/record.url?scp=85112666935&partnerID=8YFLogxK
U2 - 10.1109/JLT.2021.3095396
DO - 10.1109/JLT.2021.3095396
M3 - Article
AN - SCOPUS:85112666935
VL - 39
SP - 5980
EP - 5987
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 18
ER -
ID: 34144331