Pengfei Ma, Hu Xiao, Daren Meng, Wei Liu, Rumao Tao, Jinyong Leng, Yanxing Ma, Rongtao Su, Pu Zhou, Zejin Liu. High power all-fiberized and narrow-bandwidth MOPA system by tandem pumping strategy for thermally induced mode instability suppression[J]. High Power Laser Science and Engineering, 2018, 6(4): 04000e57
- High Power Laser Science and Engineering
- Vol. 6, Issue 4, 04000e57 (2018)
Fig. 1. Experimental setup of high power tandem-pumped, narrow-bandwidth and all-fiberized fiber amplifier.
Fig. 2. (a) The measured spectral distribution of the phase modulated laser; (b) the trend of backward power ratio (
$R_{bs}$
) along with power scaling.
Fig. 3. (a) The change of
$R_{bs}$
along with output power; (b) the spectral bandwidth as a function of output power (inset: the frequency offset distributions at different output powers).
Fig. 4. (a) The power scaling process of the MOPA system along with increase of pump power; (b) the increase of
$R_{bs}$
(%) as a function of the output power.
Fig. 5. (a) The change of spectral bandwidth with the output power (inset: the frequency offset at several different output powers); (b) the spectrum from 1000 to 1200 nm at 3940 W.
Fig. 6. (a) The normalized intensity signals collected by PD; (b) the corresponding Fourier spectral distributions; (c) the measured
$M^{2}$
factor along with power enhancement; (d) the typical far-field beam profiles at different output powers.
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20