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
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
December 2010
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), .
(doi:10.1016/j.yofte.2010.09.011).
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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Published date: December 2010
Keywords:
optics fiber amplifiers, raman scattering, raman lasers
Identifiers
Local EPrints ID: 191557
URI: http://eprints.soton.ac.uk/id/eprint/191557
ISSN: 1068-5200
PURE UUID: 2c6163ab-12e6-4312-a272-de1b443b6e17
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Date deposited: 22 Jun 2011 09:09
Last modified: 15 Mar 2024 03:09
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Contributors
Author:
Junhua Ji
Author:
Christophe A. Codemard
Author:
Jayanta K. Sahu
Author:
Johan Nilsson
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