Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers

Gayathri Bharathan, Robert I. Woodward, Martin Ams, Darren D. Hudson, Stuart D. Jackson, Alex Fuerbach

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We report the development of a widely tunable all-fiber mid-infrared laser system based on a mechanically robust fiber Bragg grating (FBG) which was inscribed through the polymer coating of a Ho3+-Pr3+ co-doped double clad ZBLAN fluoride fiber by focusing femtosecond laser pulses into the core of the fiber without the use of a phase mask. By applying mechanical tension and compression to the FBG while pumping the fiber with an 1150 nm laser diode, a continuous wave (CW) all-fiber laser with a tuning range of 37 nm, centered at 2870 nm, was demonstrated with up to 0.29 W output power. These results pave the way for the realization of compact and robust mid-infrared fiber laser systems for real-world applications in spectroscopy and medicine.

LanguageEnglish
Pages30013-30019
Number of pages7
JournalOptics Express
Volume25
Issue number24
DOIs
Publication statusPublished - 27 Nov 2017

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infrared lasers
Bragg gratings
fluorides
fibers
fiber lasers
medicine
continuous radiation
pumping
masks
semiconductor lasers
tuning
coatings
output
polymers
pulses
spectroscopy
lasers

Bibliographical note

Copyright the Publisher 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Cite this

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title = "Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers",
abstract = "We report the development of a widely tunable all-fiber mid-infrared laser system based on a mechanically robust fiber Bragg grating (FBG) which was inscribed through the polymer coating of a Ho3+-Pr3+ co-doped double clad ZBLAN fluoride fiber by focusing femtosecond laser pulses into the core of the fiber without the use of a phase mask. By applying mechanical tension and compression to the FBG while pumping the fiber with an 1150 nm laser diode, a continuous wave (CW) all-fiber laser with a tuning range of 37 nm, centered at 2870 nm, was demonstrated with up to 0.29 W output power. These results pave the way for the realization of compact and robust mid-infrared fiber laser systems for real-world applications in spectroscopy and medicine.",
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Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers. / Bharathan, Gayathri; Woodward, Robert I.; Ams, Martin; Hudson, Darren D.; Jackson, Stuart D.; Fuerbach, Alex.

In: Optics Express, Vol. 25, No. 24, 27.11.2017, p. 30013-30019.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Bharathan, Gayathri

AU - Woodward, Robert I.

AU - Ams, Martin

AU - Hudson, Darren D.

AU - Jackson, Stuart D.

AU - Fuerbach, Alex

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