TITLE:
Long-Pulse Single-Frequency All-Fiber Amplifier
AUTHORS:
Kuiyan Song, Jingdao Yang, Kun Zhang
KEYWORDS:
Long-Pulse, Single-Frequency, Fiber Laser, Stimulated Brillouin Scattering
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.11 No.12,
December
29,
2023
ABSTRACT:
In this paper, we report a high power long-pulse single-frequency all-fiber amplifier at 1064 nm with near-diffraction-limited beam quality based on a polarization-maintaining tapered Yb-doped fiber (T-YDF). By applying square wave pulse modulation to the diodes, with a frequency of 50 Hz and a pulse width of 668 μs, the peak power of the output laser reached 257 W with an average power of 8.65 W, linewidth of 10.6 kHz and M2