Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible
Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible
A high-pulse-energy, diffraction-limited, wavelength-selectable, visible source, based on Raman frequency shifting of a frequency-doubled Yb-doped fiber laser, has been studied. The relative length-scaling laws of Raman gain and self-phase modulation push the design towards short fiber lengths with large core size. It is experimentally demonstrated that the Raman clean-up effect in a graded-index multi-mode fiber is not sufficient to obtain diffraction-limited beam quality in the short fiber length. Thus, a large-core photonic crystal fiber is used to maintain diffraction-limited performance and output pulse energies of ~1 μJ, at a 1-MHz repetition rate and 1.3-ns pulse-width are successfully achieved. This step-tunable visible source should find applications in photoacoustic microscopy.
351-356
Xu, L.
b887cecd-d21e-49f4-9b45-6909a7369e84
Alam, S.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Kang, Q.
261baa75-d2c0-46f1-9386-3c6a138129f0
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
9 January 2017
Xu, L.
b887cecd-d21e-49f4-9b45-6909a7369e84
Alam, S.
2b6bdbe5-ddcc-4a88-9057-299360b93435
Kang, Q.
261baa75-d2c0-46f1-9386-3c6a138129f0
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Xu, L., Alam, S., Kang, Q., Shepherd, D.P. and Richardson, D.J.
(2017)
Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible.
Optics Express, 25 (1), .
(doi:10.1364/OE.25.000351).
Abstract
A high-pulse-energy, diffraction-limited, wavelength-selectable, visible source, based on Raman frequency shifting of a frequency-doubled Yb-doped fiber laser, has been studied. The relative length-scaling laws of Raman gain and self-phase modulation push the design towards short fiber lengths with large core size. It is experimentally demonstrated that the Raman clean-up effect in a graded-index multi-mode fiber is not sufficient to obtain diffraction-limited beam quality in the short fiber length. Thus, a large-core photonic crystal fiber is used to maintain diffraction-limited performance and output pulse energies of ~1 μJ, at a 1-MHz repetition rate and 1.3-ns pulse-width are successfully achieved. This step-tunable visible source should find applications in photoacoustic microscopy.
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submited revised manuscript2 .pdf
- Accepted Manuscript
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oe-25-1-351
- Version of Record
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Accepted/In Press date: 23 November 2016
e-pub ahead of print date: 5 January 2017
Published date: 9 January 2017
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 403257
URI: http://eprints.soton.ac.uk/id/eprint/403257
ISSN: 1094-4087
PURE UUID: 0cc95a09-7bda-49c3-97a6-f9b7490130ec
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Date deposited: 29 Nov 2016 11:57
Last modified: 16 Mar 2024 02:40
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Contributors
Author:
L. Xu
Author:
S. Alam
Author:
Q. Kang
Author:
D.P. Shepherd
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