10 watt-level tunable narrow linewidth all-fiber amplifier

Abstract

We report here a high-power, wavelength tunable and narrow linewidth 1.5 µm all-fiber laser amplifier based on a tunable diode laser and Er-Yb co-doped fibers. The laser wavelength can be precisely tuned from 1535 nm to 1580 nm, which covers many absorption lines of mid-infrared laser gases, such as C 2 H 2 , HCN, CO, and HI. The maximum laser power is >11 W, and the linewidth is about 200-300 MHz, which is close to the absorption linewidth of the above-mentioned gases. This work provides a suitable pump source for high-power wavelength tunable mid-infrared fiber gas lasers based on low-loss hollow-core fibers.

Editorial: HPLSE special issue on fibres for high-power lasers

“…Nonlinearity optimization of dissipative-soliton fiber laser for generation of pulses with 350 kW peak power [5] 6. 10 watt-level tunable narrow linewidth 1.5 µm allfiber amplifier [6] 7. Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications [7] 8.…”

“…• Large mode area fibres for power scaling Submissions for this special issue cover from the development of active fibres itself to the advances in fibre lasers and fibre amplifiers. Papers described research on high-power ytterbium-doped fibre lasers and amplifiers operating in continuous wave [1,2] , nanosecond regime [3] , picosecond regime [4] and femtosecond regime [5] ; erbiumdoped tunable fibre amplifier [6] ; Raman fibre laser [7,8] and nonlinear amplifier [9] ; high harmonic generation for UV Correspondence to: Y. Wang, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China. Email: wangyingying@bjut.edu.cn wavelength [10] as well as a review of ytterbium-doped fibres [11] .…”

“…Special issue content kW-class high power fiber laser enabled by active long tapered fiber [1] Numerical modeling of the thermally induced core laser leakage in high power co-pumped ytterbium doped fiber amplifier [2] Monolithic high-average-power linearly polarized nanosecond pulsed fiber laser with near-diffraction-limited beam quality [3] High pulse energy fiber/solid-slab hybrid picosecond pulse system for material processing on polycrystalline diamonds [4] Nonlinearity optimization of dissipative-soliton fiber laser for generation of pulses with 350 kW peak power [5] 10 watt-level tunable narrow linewidth all-fiber amplifier [6] Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications [7] Investigation on extreme frequency shift in silica fiber-based high-power Raman fiber laser [8] Towards high power nonlinear fiber amplifier [9] Efficient high harmonics generation by enhancement cavity driven with a post-compressed FCPA laser at 10 MHz [10] Development and prospect of high-power doped fibers [11] …”