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Efficient femtosecond pulse generation using a parabolic amplifier combined with a pulse compressor. I. Stimulated Raman scattering effects

Efficient femtosecond pulse generation using a parabolic amplifier combined with a pulse compressor. I. Stimulated Raman scattering effects
Efficient femtosecond pulse generation using a parabolic amplifier combined with a pulse compressor. I. Stimulated Raman scattering effects
The effects of stimulated Raman scattering on femtosecond pulse generation using a parabolic amplifier and a grating pair compressor are presented. We derive an explicit analytical form for the Stokes pulse evolution. We find that the evolution of the Stokes pulse can be divided into four regimes; small Gaussian Stokes pulse, small asymmetric Stokes pulse, signal depletion, and parabolic Raman pulse. In order to achieve efficient pulse compression, the parabolic amplifier should be operated in the small Stokes pulse regime where the signal pulse is not seriously distorted. We also derive an analytical expression to obtain a critical fiber length for the small Stokes pulse regime. The derived theory is applied to a realistic high power femtosecond pulse generation process through a split-step Fourier numerical simulation. The pulse compression results confirm that our derived critical fiber length leads to the highest peak power and shortest width of compressed pulse.
0740-3224
1-9
Soh, Daniel B.S.
63fa85d4-c6db-461a-8383-fdb1897bf3d0
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Grudinin, Anatoly B.
dd6c8923-31b0-4fa2-b279-1ba3bf18e72f
Soh, Daniel B.S.
63fa85d4-c6db-461a-8383-fdb1897bf3d0
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Grudinin, Anatoly B.
dd6c8923-31b0-4fa2-b279-1ba3bf18e72f

Soh, Daniel B.S., Nilsson, Johan and Grudinin, Anatoly B. (2006) Efficient femtosecond pulse generation using a parabolic amplifier combined with a pulse compressor. I. Stimulated Raman scattering effects. Journal of the Optical Society of America B, 23 (1), 1-9. (doi:10.1364/JOSAB.23.000001).

Record type: Article

Abstract

The effects of stimulated Raman scattering on femtosecond pulse generation using a parabolic amplifier and a grating pair compressor are presented. We derive an explicit analytical form for the Stokes pulse evolution. We find that the evolution of the Stokes pulse can be divided into four regimes; small Gaussian Stokes pulse, small asymmetric Stokes pulse, signal depletion, and parabolic Raman pulse. In order to achieve efficient pulse compression, the parabolic amplifier should be operated in the small Stokes pulse regime where the signal pulse is not seriously distorted. We also derive an analytical expression to obtain a critical fiber length for the small Stokes pulse regime. The derived theory is applied to a realistic high power femtosecond pulse generation process through a split-step Fourier numerical simulation. The pulse compression results confirm that our derived critical fiber length leads to the highest peak power and shortest width of compressed pulse.

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Published date: 1 January 2006
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 411466
URI: http://eprints.soton.ac.uk/id/eprint/411466
ISSN: 0740-3224
PURE UUID: 4b890eaf-e7fd-4b75-b988-623799fe3e15
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 20 Jun 2017 16:31
Last modified: 17 Dec 2019 01:55

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