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

Research output: Contribution to journalArticle

24 Citations (Scopus)
16 Downloads (Pure)

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 languageEnglish
Pages (from-to)30013-30019
Number of pages7
JournalOptics Express
Volume25
Issue number24
DOIs
Publication statusPublished - 27 Nov 2017

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.

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