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Design, performance, and limitations of fibers for cladding-pumped Raman lasers

Design, performance, and limitations of fibers for cladding-pumped Raman lasers
Design, performance, and limitations of fibers for cladding-pumped Raman lasers
In this paper, we present basic design rules for double-clad fibers that enable efficient 1st-Stokes operation of cladding-pumped fiber Raman devices. Limiting factors that we treat include unwanted 2nd-Stokes generation, material damage in the core, pump pulse dispersion, inner-cladding NA, background loss, pulse shape and pump noise. With a well-designed fiber, we calculate that a pump-to-signal brightness enhancement of over 2000 is possible, with certain pump parameters. On experimental work, we report a 100 W cladding-pumped fiber Raman laser at 1120 nm. Furthermore, a double-clad Raman fiber with large-mode area, 40 µm core diameter, pumped by a Q-switched Nd:YAG laser is used to generate Stokes pulses with 1 mJ energy.
optics fiber amplifiers, raman scattering, raman lasers
1068-5200
428-441
Ji, Junhua
b8f18985-425b-4077-9242-9e624e80299c
Codemard, Christophe A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Ji, Junhua
b8f18985-425b-4077-9242-9e624e80299c
Codemard, Christophe A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Ji, Junhua, Codemard, Christophe A., Sahu, Jayanta K. and Nilsson, Johan (2010) Design, performance, and limitations of fibers for cladding-pumped Raman lasers. [in special issue: Special Fiber Structures and their Applications] Optical Fiber Technology, 16 (6), 428-441. (doi:10.1016/j.yofte.2010.09.011).

Record type: Article

Abstract

In this paper, we present basic design rules for double-clad fibers that enable efficient 1st-Stokes operation of cladding-pumped fiber Raman devices. Limiting factors that we treat include unwanted 2nd-Stokes generation, material damage in the core, pump pulse dispersion, inner-cladding NA, background loss, pulse shape and pump noise. With a well-designed fiber, we calculate that a pump-to-signal brightness enhancement of over 2000 is possible, with certain pump parameters. On experimental work, we report a 100 W cladding-pumped fiber Raman laser at 1120 nm. Furthermore, a double-clad Raman fiber with large-mode area, 40 µm core diameter, pumped by a Q-switched Nd:YAG laser is used to generate Stokes pulses with 1 mJ energy.

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More information

Published date: December 2010
Keywords: optics fiber amplifiers, raman scattering, raman lasers

Identifiers

Local EPrints ID: 191557
URI: https://eprints.soton.ac.uk/id/eprint/191557
ISSN: 1068-5200
PURE UUID: 2c6163ab-12e6-4312-a272-de1b443b6e17
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 22 Jun 2011 09:09
Last modified: 10 Sep 2019 00:50

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