Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability.

Marko Laurila; Mette Marie Jørgensen; Kristian Rymann Hansen; Thomas T. Alkeskjold; Jes Broeng; Jesper Lægsgaard

doi:10.1364/OE.20.005742

Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability.

Marko Laurila, Mette Marie Jørgensen, Kristian Rymann Hansen, Thomas T. Alkeskjold, Jes Broeng, Jesper Lægsgaard

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Abstract

We demonstrate a high power fiber (85μm core) amplifier delivering up to 292Watts of average output power using a mode-locked 30ps source at 1032nm. Utilizing a single mode distributed mode filter bandgap rod fiber, we demonstrate 44% power improvement before the threshold-like onset of mode instabilities by operating the rod fiber in a leaky waveguide regime. We investigate the guiding dynamics of the rod fiber and report a distinct bandgap blue-shifting as function of increased signal power level. Furthermore, we theoretically analyze the guiding dynamics of the DMF rod fiber and explain the bandgap blue-shifting with thermally induced refractive index change of the refractive index profile.

Original language	English
Journal	Optics Express
Volume	20
Issue number	5
Pages (from-to)	5742-5753
ISSN	1094-4087
DOIs	https://doi.org/10.1364/OE.20.005742
Publication status	Published - 2012

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-5-5742. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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title = "Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability.",

abstract = "We demonstrate a high power fiber (85μm core) amplifier delivering up to 292Watts of average output power using a mode-locked 30ps source at 1032nm. Utilizing a single mode distributed mode filter bandgap rod fiber, we demonstrate 44% power improvement before the threshold-like onset of mode instabilities by operating the rod fiber in a leaky waveguide regime. We investigate the guiding dynamics of the rod fiber and report a distinct bandgap blue-shifting as function of increased signal power level. Furthermore, we theoretically analyze the guiding dynamics of the DMF rod fiber and explain the bandgap blue-shifting with thermally induced refractive index change of the refractive index profile.",

author = "Marko Laurila and J{\o}rgensen, {Mette Marie} and Hansen, {Kristian Rymann} and Alkeskjold, {Thomas T.} and Jes Broeng and Jesper L{\ae}gsgaard",

note = "This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-5-5742. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.",

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doi = "10.1364/OE.20.005742",

language = "English",

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T1 - Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability.

AU - Laurila, Marko

AU - Jørgensen, Mette Marie

AU - Hansen, Kristian Rymann

AU - Alkeskjold, Thomas T.

AU - Broeng, Jes

AU - Lægsgaard, Jesper

N1 - This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-5-5742. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

PY - 2012

Y1 - 2012

N2 - We demonstrate a high power fiber (85μm core) amplifier delivering up to 292Watts of average output power using a mode-locked 30ps source at 1032nm. Utilizing a single mode distributed mode filter bandgap rod fiber, we demonstrate 44% power improvement before the threshold-like onset of mode instabilities by operating the rod fiber in a leaky waveguide regime. We investigate the guiding dynamics of the rod fiber and report a distinct bandgap blue-shifting as function of increased signal power level. Furthermore, we theoretically analyze the guiding dynamics of the DMF rod fiber and explain the bandgap blue-shifting with thermally induced refractive index change of the refractive index profile.

AB - We demonstrate a high power fiber (85μm core) amplifier delivering up to 292Watts of average output power using a mode-locked 30ps source at 1032nm. Utilizing a single mode distributed mode filter bandgap rod fiber, we demonstrate 44% power improvement before the threshold-like onset of mode instabilities by operating the rod fiber in a leaky waveguide regime. We investigate the guiding dynamics of the rod fiber and report a distinct bandgap blue-shifting as function of increased signal power level. Furthermore, we theoretically analyze the guiding dynamics of the DMF rod fiber and explain the bandgap blue-shifting with thermally induced refractive index change of the refractive index profile.

U2 - 10.1364/OE.20.005742

DO - 10.1364/OE.20.005742

M3 - Journal article

SN - 1094-4087

VL - 20

SP - 5742

EP - 5753

JO - Optics Express

JF - Optics Express

IS - 5

ER -

Distributed mode filtering rod fiber amplifier delivering 292W with improved mode stability.

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