Abstract

We demonstrate operation of a mid-infrared dysprosium-doped fiber laser with emission at 3388 nm, representing the longest wavelength yet achieved from this class of laser, to the best of our knowledge. Oscillation far removed from the ${\rm{D}}{{\rm{y}}^{3 +}}$ gain peak around 3 µm is achieved through the design of a high feedback optical cavity employing a directly inscribed fiber Bragg grating as the output coupler. Laser performance is characterized by a slope efficiency with respect to injected pump power of 38% and maximum output power of 134 mW, an improvement of at least three orders of magnitude over prior attempts at long wavelength ${\rm{D}}{{\rm{y}}^{3 +}}$ fiber laser operation. This wavelength coincides with a maximum in the absorption coefficient of PMMA, which we exploit for preliminary demonstration of the utility of this source in polymer processing.

© 2021 Optical Society of America

Room-temperature watt-level and tunable ∼3 µm lasers in Ho³⁺/Pr³⁺ co-doped AlF₃-based glass fiber

Mo Liu, Jiquan Zhang, Niannian Xu, Xinwei Tian, Shijie Jia, Shunbin Wang, Gilberto Brambilla, and Pengfei Wang
Opt. Lett. 46(10) 2417-2420 (2021)

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, and S. D. Jackson
Opt. Lett. 43(7) 1471-1474 (2018)

Highly efficient mid-infrared dysprosium fiber laser

Matthew R. Majewski and Stuart D. Jackson
Opt. Lett. 41(10) 2173-2176 (2016)

Demonstration of kilowatt monolithic Yb-doped fiber laser operation near 980 nm

Maoni Chen, Jianqiu Cao, Aimin Liu, Zhihe Huang, Zhiyong Pan, Zilun Chen, and Jinbao Chen
Opt. Lett. 46(21) 5340-5343 (2021)

2.3 W monolithic fiber laser operating in the visible

Marie-Pier Lord, Vincent Fortin, Frédéric Maes, Lauris Talbot, Martin Bernier, and Réal Vallée
Opt. Lett. 46(10) 2392-2395 (2021)