Acta Photonica Sinica, Volume. 48, Issue 5, 506002(2019)
Switchable Mode Locking of Rectangular Dissipative Soliton and Gaussian-spectrum Pulse in Normal Dispersion Fiber Laser
A switchable operation of rectangular dissipative soliton and Gaussian-spectrum pulse has been investigated experimentally in the mode-locked fiber laser using single-walled carbon nanotube and nonlinear polarization rotation technique. The rectangular dissipative soliton is strong chirped with the temporal and spectral width of ~6.33 ps and ~12.54 nm, respectively. By appropriately adjusting the polarization states, the Gaussian-spectrum state with ~1.87 ps duration and ~2.2 nm bandwidth is achieved. The time-bandwidth product of the Gaussian-spectrum pulse is 0.51, suggesting that the pulse is nearly chirp-free. The switching of different operations could be ascribed to the change of cavity polarizations relying on polarization controllers, which is also demonstrated by the simulation results.
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LI Jing-ling, HAN Dong-dong, HUI Zhan-qiang, REN Kai-li, LUO Wen-feng, YAO Ying, ZHAO Feng, XIN Xiang-jun, GONG Jia-min. Switchable Mode Locking of Rectangular Dissipative Soliton and Gaussian-spectrum Pulse in Normal Dispersion Fiber Laser[J]. Acta Photonica Sinica, 2019, 48(5): 506002
Received: Jan. 2, 2019
Accepted: --
Published Online: Jun. 12, 2019
The Author Email: Jing-ling LI (lijingling@163.com)