To design a compact erbium-doped fiber laser, a high-concentration erbium-doped fiber （EDF） is needed. However, increasing the erbium ion （Er3＋） concentration can reduce the EDF performance via the Er3＋-Er3＋ in...To design a compact erbium-doped fiber laser, a high-concentration erbium-doped fiber （EDF） is needed. However, increasing the erbium ion （Er3＋） concentration can reduce the EDF performance via the Er3＋-Er3＋ interaction. In this Letter, we investigate the Er3＋-Er3＋ interaction effect by designing a tunable erbium-doped fiberring laser （EDFRL）. This is the first time （to the best of our knowledge） that someone has considered different numbers of ions per cluster and simulated the EDFRL output power degradation due to ion-ion interaction. If the number of ions in the cluster is increased, the lasing output power will decrease accordingly. The most dom- inant effect is seen in the 1530 nm wavelength region, where the EDF shows a higher signal absorption compared to the other wavelength region. Moreover, a comparison has been done for lasing performance analysis with different dopant ion concentrations. The comparison results show that a higher dopant concentration is advanta- geous for longer-wavelength lasing.展开更多
We demonstrate a nonlinearity optimization method by altering distribution of passive fibers in a dissipative-soliton mode-locked fiber laser to level up output parameters. In the numerical simulation, we found that t...We demonstrate a nonlinearity optimization method by altering distribution of passive fibers in a dissipative-soliton mode-locked fiber laser to level up output parameters. In the numerical simulation, we found that the passive fiber segment after gain fiber characterizes the highest average B-integral among fiber segments. By reducing the length of this fiber section and keeping the total passive fiber length as constant, the output pulse energy can be effectively scaled up while maintaining a short dechirped pulse duration, resulting in boosting peak power. With this method, 37-n J pulses are generated from a dissipative-soliton mode-locked cladding pumped ytterbium-doped single-mode fiber laser in the experiment. The pulse can be dechirped to 66 fs with 350 k W peak power. Moreover, the pulse pedestal is suppressed by a vector-dispersion compressor.展开更多
基金supported through a project approved by the Deanship of Scientific Research,King Fahd University of Petroleum and Minerals,Dammam,Saudi Arabia
文摘To design a compact erbium-doped fiber laser, a high-concentration erbium-doped fiber （EDF） is needed. However, increasing the erbium ion （Er3＋） concentration can reduce the EDF performance via the Er3＋-Er3＋ interaction. In this Letter, we investigate the Er3＋-Er3＋ interaction effect by designing a tunable erbium-doped fiberring laser （EDFRL）. This is the first time （to the best of our knowledge） that someone has considered different numbers of ions per cluster and simulated the EDFRL output power degradation due to ion-ion interaction. If the number of ions in the cluster is increased, the lasing output power will decrease accordingly. The most dom- inant effect is seen in the 1530 nm wavelength region, where the EDF shows a higher signal absorption compared to the other wavelength region. Moreover, a comparison has been done for lasing performance analysis with different dopant ion concentrations. The comparison results show that a higher dopant concentration is advanta- geous for longer-wavelength lasing.
基金supported by the National Natural Science Foundation of China(Nos.U1730115,61535009,and 11527808)the Open Fund of the State Key Laboratory of High Field Laser Physics(Shanghai Institute of Optics and Fine Mechanics)
文摘We demonstrate a nonlinearity optimization method by altering distribution of passive fibers in a dissipative-soliton mode-locked fiber laser to level up output parameters. In the numerical simulation, we found that the passive fiber segment after gain fiber characterizes the highest average B-integral among fiber segments. By reducing the length of this fiber section and keeping the total passive fiber length as constant, the output pulse energy can be effectively scaled up while maintaining a short dechirped pulse duration, resulting in boosting peak power. With this method, 37-n J pulses are generated from a dissipative-soliton mode-locked cladding pumped ytterbium-doped single-mode fiber laser in the experiment. The pulse can be dechirped to 66 fs with 350 k W peak power. Moreover, the pulse pedestal is suppressed by a vector-dispersion compressor.
