Abstract

In this Letter, we report, to the best of our knowledge, the first demonstration of an in-band pumped gain-switched ${{\rm{Dy}}^{3 +}}$-doped fiber laser operating at 3.24 µm. The monolithic cavity bounded by two fiber Bragg gratings was pumped by a gain-switched ${{\rm{Er}}^{3 +}}$-doped fiber system. It produced stable nanosecond pulses in a single-pulse regime on its entire operating range from 20 kHz to 120 kHz. A record average power of 1.43 W was achieved for a repetition rate of 120 kHz, and a record pulse energy of 19.2 µJ was achieved at 60 kHz. These results represent a significant improvement in ${{\rm{Dy}}^{3 +}}$-doped pulsed fiber laser performances and open the way to applications in the fields of remote sensing and material processing.

© 2020 Optical Society of America

Dysprosium gain-switched fiber laser at 3.24 µm pumped at 1064 nm

Frédéric Jobin, Yiğit Ozan Aydin, Martin Bernier, and Réal Vallée
Opt. Continuum 2(2) 498-505 (2023)

10-W-level monolithic dysprosium-doped fiber laser at 3.24 μm

Vincent Fortin, Frédéric Jobin, Maxence Larose, Martin Bernier, and Réal Vallée
Opt. Lett. 44(3) 491-494 (2019)

Gain-switched fiber laser at 3.55 μm

Frédéric Jobin, Vincent Fortin, Frédéric Maes, Martin Bernier, and Réal Vallée
Opt. Lett. 43(8) 1770-1773 (2018)

40 kHz, 20 ns acousto-optically Q-switched 4 µm Fe:ZnSe laser pumped by a fluoride fiber laser

Hiyori Uehara, Takanori Tsunai, Bingyu Han, Kenji Goya, Ryo Yasuhara, Fedor Potemkin, Junji Kawanaka, and Shigeki Tokita
Opt. Lett. 45(10) 2788-2791 (2020)

Tunable passively Q-switched Dy³⁺-doped fiber laser from 2.71 to 3.08  μm using PbS nanoparticles

Hongyu Luo, Jianfeng Li, Ying Gao, Yao Xu, Xiaohui Li, and Yong Liu
Opt. Lett. 44(9) 2322-2325 (2019)