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

G. Bharathan, R. I. Woodward, M. Ams, D. D. Hudson, S. D. Jackson A. Fuerbach : Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers. In: Optics Express, 25 , pp. 30013, 2017.

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.

BibTeX (Download)

@article{Bharathan2017,
title = {Direct inscription of Bragg gratings into coated fluoride fibers for widely tunable and robust mid-infrared lasers},
author = {G. Bharathan, R. I. Woodward, M. Ams, D. D. Hudson, S. D. Jackson A. Fuerbach
},
url = {http://riwoodward.com/publication_files/bharathan_2017_fbg.pdf},
doi = {10.1364/OE.25.030013},
year  = {2017},
date = {2017-11-20},
journal = {Optics Express},
volume = {25},
pages = {30013},
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.},
keywords = {fbg, fibre laser},
pubstate = {published},
tppubtype = {article}
}