In-fiber polarizer based on a 45-degree tilted fluoride fiber Bragg grating for mid-infrared fiber laser technology. In: OSA Continuum, vol. 1, pp. 56, 2018.
Abstract
We report the direct femtosecond laser inscription of a 45-deg tilted fiber Bragg grating (TFBG) into fluoride fiber, creating an in-fiber mid-infrared polarizer. Utilizing a 16 mm long intracavity TFBG, we demonstrate a 2.862 µm Ho3+Pr3+:ZBLAN fiber laser with 21.6 dB output polarization extinction ratio (PER), up to 0.37 W output power and 31.3% slope efficiency. In addition, we experimentally demonstrate that the laser PER is a linear function of grating length. Our results show that fluoride TFBGs are a promising route to replace bulk polarizers in mid-IR laser cavities, paving the way to all-fiber mid-infrared laser systems.
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@article{Bharathan2018a,
title = {In-fiber polarizer based on a 45-degree tilted fluoride fiber Bragg grating for mid-infrared fiber laser technology},
author = {G. Bharathan and D. D. Hudson and R. I. Woodward and S. D. Jackson and A. Fuerbach},
url = {https://www.riwoodward.com/publication_files/bharathan_2018_fbg.pdf},
doi = {10.1364/OSAC.1.000056},
year = {2018},
date = {2018-09-14},
journal = {OSA Continuum},
volume = {1},
pages = {56},
abstract = {We report the direct femtosecond laser inscription of a 45-deg tilted fiber Bragg grating (TFBG) into fluoride fiber, creating an in-fiber mid-infrared polarizer. Utilizing a 16 mm long intracavity TFBG, we demonstrate a 2.862 µm Ho3+Pr3+:ZBLAN fiber laser with 21.6 dB output polarization extinction ratio (PER), up to 0.37 W output power and 31.3% slope efficiency. In addition, we experimentally demonstrate that the laser PER is a linear function of grating length. Our results show that fluoride TFBGs are a promising route to replace bulk polarizers in mid-IR laser cavities, paving the way to all-fiber mid-infrared laser systems.},
keywords = {fibre laser, mid-infrared},
pubstate = {published},
tppubtype = {article}
}