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Lasers
Increase in the output power of radiation with a wavelength of about 1650 nm using dual-polarised Raman amplification
V. I. Grigorievsky, Ya. A. Tezadov Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences
Abstract:
Nonlinear distortions of radiation at the Raman amplifier output in the regimes with one and two orthogonal polarisations (single- and dual-polarised amplification) in an extended optical fibre are compared. At an output power of 3.5 W and a wavelength of 1650 nm the nonlinear distortions for dual-polarised amplification are smaller, due to which a narrower spectrum can be provided for output radiation. As a result, one can measure more exactly, for example, the methane concentration using a remote lidar system. A somewhat higher power of an undistorted signal (~4 W) without deteriorating the spectral properties of output radiation is obtained in the dual-polarised amplification regime at the aforementioned wavelength.
Keywords:
lidar, Raman amplifier, polarisation, pumping, methane.
Received: 19.07.2021
Citation:
V. I. Grigorievsky, Ya. A. Tezadov, “Increase in the output power of radiation with a wavelength of about 1650 nm using dual-polarised Raman amplification”, Kvantovaya Elektronika, 51:11 (2021), 983–986 [Quantum Electron., 51:11 (2021), 983–986]
Linking options:
https://www.mathnet.ru/eng/qe17927 https://www.mathnet.ru/eng/qe/v51/i11/p983
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Abstract page: | 79 | Full-text PDF : | 11 | References: | 15 | First page: | 13 |
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