1. Amplified characteristics and supercontinuum generation of square-wave pulse fiber laser
- Author
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Wanzhuo Ma, Tianshu Wang, Qingsong Jia, Zhen Wang, Furen Wang, Chengbo Wang, Yinhao Bai, and Qingchao Su
- Subjects
Materials science ,business.industry ,General Engineering ,Single-mode optical fiber ,Physics::Optics ,02 engineering and technology ,Laser ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Supercontinuum ,Pulse (physics) ,law.invention ,010309 optics ,020210 optoelectronics & photonics ,Optics ,Mode-locking ,law ,Fiber laser ,0103 physical sciences ,Dispersion (optics) ,0202 electrical engineering, electronic engineering, information engineering ,Fiber ,business - Abstract
We experimentally studied a passive mode-locked square-wave fiber laser with net-normal dispersion by using a nonlinear amplifying loop mirror. The output pulse width of the square-wave pulse (SWP) can be extended with the increasing of the pump power as well as single pulse energy. The SWP can be amplified without shape distortion when the mode-locked laser is injected into an erbium-ytterbium codoped fiber amplifier. Then, by inputting the amplified SWPs into a single mode fiber (SMF), a supercontinuum (SC) can be observed with the spectral range of about 1550 to 1850 nm. Broader and flatter SC with the 20-dB spectral range of about 1550 to 1950 nm can also be generated using a segment of dispersion-shifted fiber instead of SMF.
- Published
- 2018
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