Abstract

In this article, we studied high-energy single frequency transform-limited Er-doped amplifiers core pumped by a specially developed Yb-doped fiber laser at 980 nm and a Raman laser at 1480 nm. It was demonstrated that pumping at 1480 nm allows achieving slightly higher maximum pulse energy for long pulses in the absence of nonlinear effects. At the same time, amplifiers with a pump at 980 nm have a higher threshold of stimulated Brillouin scattering (SBS), and higher peak power of shorter pulses can be achieved in such a scheme. Lasers with more than 730 μJ pulse energy and with higher than 3.5 kW peak power were demonstrated.

All-fiber, single-frequency, and single-mode Er³⁺:Yb³⁺ fiber amplifier at 1556  nm core-pumped at 1018  nm

Omar de Varona, Michael Steinke, Jörg Neumann, and Dietmar Kracht
Opt. Lett. 43(11) 2632-2635 (2018)

Single frequency, 5 ns, 200 μJ, 1553 nm fiber laser using silica based Er-doped fiber

Zhigang Zhao, Hongwen Xuan, Hironori Igarashi, Shinji Ito, Kouji Kakizaki, and Yohei Kobayashi
Opt. Express 23(23) 29764-29771 (2015)

High energy, 1572.3 nm pulses for CO₂ LIDAR from a polarization-maintaining, very-large-mode-area, Er-doped fiber amplifier

J. W. Nicholson, A. DeSantolo, M. F. Yan, P. Wisk, B. Mangan, G. Puc, A. W. Yu, and M. A. Stephen
Opt. Express 24(17) 19961-19968 (2016)

Single-frequency 45-mJ pulses from a MOPA system using an Er,Yb:glass planar waveguide amplifier and a large mode area Er-doped fiber amplifier

Junia Nomura, Kenichi Hirosawa, Takayuki Yanagisawa, Nobuo Ohata, Shunsuke Imamura, Daisuke Sakaizawa, and Naoya Tomii
Opt. Lett. 48(7) 1758-1761 (2023)

High average power, 10  GHz pulses from a very-large-mode-area, Er-doped fiber amplifier

J. W. Nicholson, R. Ahmad, A. DeSantolo, and Z. Várallyay
J. Opt. Soc. Am. B 34(3) A1-A6 (2017)