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

doi:10.1364/OE.25.030013

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

^*Corresponding author for this work

MQ Photonics Research Centre

Research output: Contribution to journal › Article › peer-review

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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.

Original language	English
Pages (from-to)	30013-30019
Number of pages	7
Journal	Optics Express
Volume	25
Issue number	24
DOIs	https://doi.org/10.1364/OE.25.030013
Publication status	Published - 27 Nov 2017

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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.

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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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AU - Bharathan, Gayathri

AU - Woodward, Robert I.

AU - Ams, Martin

AU - Hudson, Darren D.

AU - Jackson, Stuart D.

AU - Fuerbach, Alex

N1 - 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.

PY - 2017/11/27

Y1 - 2017/11/27

N2 - 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.

AB - 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

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