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High fidelity femtosecond pulses from an ultrafast fiber laser system via adaptive amplitude and phase pre-shaping

High fidelity femtosecond pulses from an ultrafast fiber laser system via adaptive amplitude and phase pre-shaping
High fidelity femtosecond pulses from an ultrafast fiber laser system via adaptive amplitude and phase pre-shaping
The generation of high-fidelity femtosecond pulses is experimentally demonstrated in a fiber based chirped-pulse amplification (CPA) system through an adaptive amplitude and phase pre-shaping technique. A pulse shaper, based on a dual-layer liquid crystal spatial light modulator (LC-SLM), was implemented in the fiber CPA system for amplitude and phase shaping prior to amplification. The LC-SLM was controlled using a differential evolution algorithm, to maximize a two-photon absorption detector signal from the compressed fiber CPA output pulses. It is shown that this approach compensates for both accumulated phase from material dispersion and nonlinear phase modulation. A train of pulses was produced with an average power of 12.6W at a 50MHz repetition rate from our fiber CPA system, which were compressible to high fidelity pulses with a duration of 170 fs.
1094-4087
15074-15089
Prawiharjo, Jerry
4e80b3bf-c31c-4ecb-9def-54f4e8484f6c
Daga, Nikita K.
c37109c1-b85d-48c8-95d2-877455668e45
Geng, Rui
dd2ce01f-de81-4618-a019-53db0105d3b2
Price, Jonathan H.V.
fddcce17-291b-4d01-bd38-8fb0453abdc8
Hanna, David C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Shepherd, David P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Prawiharjo, Jerry
4e80b3bf-c31c-4ecb-9def-54f4e8484f6c
Daga, Nikita K.
c37109c1-b85d-48c8-95d2-877455668e45
Geng, Rui
dd2ce01f-de81-4618-a019-53db0105d3b2
Price, Jonathan H.V.
fddcce17-291b-4d01-bd38-8fb0453abdc8
Hanna, David C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Shepherd, David P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead

Prawiharjo, Jerry, Daga, Nikita K., Geng, Rui, Price, Jonathan H.V., Hanna, David C., Richardson, David J. and Shepherd, David P. (2008) High fidelity femtosecond pulses from an ultrafast fiber laser system via adaptive amplitude and phase pre-shaping. Optics Express, 16 (19), 15074-15089. (doi:10.1364/OE.16.015074).

Record type: Article

Abstract

The generation of high-fidelity femtosecond pulses is experimentally demonstrated in a fiber based chirped-pulse amplification (CPA) system through an adaptive amplitude and phase pre-shaping technique. A pulse shaper, based on a dual-layer liquid crystal spatial light modulator (LC-SLM), was implemented in the fiber CPA system for amplitude and phase shaping prior to amplification. The LC-SLM was controlled using a differential evolution algorithm, to maximize a two-photon absorption detector signal from the compressed fiber CPA output pulses. It is shown that this approach compensates for both accumulated phase from material dispersion and nonlinear phase modulation. A train of pulses was produced with an average power of 12.6W at a 50MHz repetition rate from our fiber CPA system, which were compressible to high fidelity pulses with a duration of 170 fs.

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Published date: 10 September 2008
Organisations: Optoelectronics Research Centre, Physics & Astronomy

Identifiers

Local EPrints ID: 63352
URI: https://eprints.soton.ac.uk/id/eprint/63352
ISSN: 1094-4087
PURE UUID: 4f7be95a-3b9d-4c46-84a1-5443ff5dedca
ORCID for Jonathan H.V. Price: ORCID iD orcid.org/0000-0003-0256-9172
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for David P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184

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Date deposited: 08 Oct 2008
Last modified: 20 Jul 2019 01:25

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Contributors

Author: Jerry Prawiharjo
Author: Nikita K. Daga
Author: Rui Geng
Author: David C. Hanna
Author: David P. Shepherd ORCID iD

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