Watt-level dysprosium fiber laser at 3.15 µm with 73% slope efficiency

R. I. Woodward, M. R. Majewski, G. Bharathan, D. D. Hudson, A. Fuerbach, S. D. Jackson: Watt-level dysprosium fiber laser at 3.15 µm with 73% slope efficiency. In: Optics Letters, 43 (7), pp. 1471, 2018.

Abstract

Rare-earth-doped fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6–3.0 μm and 3.3–3.8 μm regions based on erbium and holmium ions. The intermediate wavelength range, however, remains vastly underserved, despite prospects for important manufacturing and defense applications. Here, we demonstrate the potential of dysprosium-doped fiber to solve this problem, with a simple in-band pumped grating-stabilized linear cavity generating up to 1.06 W at 3.15 μm. A slope efficiency of 73% with respect to launched power (77% relative to absorbed power) is achieved—the highest value for any mid-infrared fiber laser to date, to the best of our knowledge. Opportunities for further power and efficiency scaling are also discussed.

BibTeX (Download)

@article{Woodward2018_watt,
title = {Watt-level dysprosium fiber laser at 3.15 µm with 73% slope efficiency},
author = {R. I. Woodward and M. R. Majewski and G. Bharathan and D. D. Hudson and A. Fuerbach and S. D. Jackson},
url = {http://riwoodward.com/publication_files/woodward_2018_watt.pdf},
doi = {10.1364/OL.43.001471},
year  = {2018},
date = {2018-03-20},
journal = {Optics Letters},
volume = {43},
number = {7},
pages = {1471},
abstract = {Rare-earth-doped fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6–3.0 μm and 3.3–3.8 μm regions based on erbium and holmium ions. The intermediate wavelength range, however, remains vastly underserved, despite prospects for important manufacturing and defense applications. Here, we demonstrate the potential of dysprosium-doped fiber to solve this problem, with a simple in-band pumped grating-stabilized linear cavity generating up to 1.06 W at 3.15 μm. A slope efficiency of 73% with respect to launched power (77% relative to absorbed power) is achieved—the highest value for any mid-infrared fiber laser to date, to the best of our knowledge. Opportunities for further power and efficiency scaling are also discussed.},
keywords = {dysprosium, fibre laser, mid-infrared},
pubstate = {published},
tppubtype = {article}
}