Third-order orbital angular momentum pulse generation from a passively Q-switched fiber laser

Third-order orbital angular momentum pulse generation from a passively Q-switched fiber laser

We propose and demonstrate an all-fiber passively Q-switched laser generating a third-order orbital angular momentum (OAM) pulse by introducing a few-mode long-period fiber grating (LPFG) into the laser cavity. The LPFG with asymmetric cross structure and strong refractive index modulation overcomes...

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Bibliographic Details
Main Authors: Du, C. (Author), Gao, S. (Author), Li, W. (Author), Li, Z. (Author), Liu, W. (Author), Tu, J. (Author), Wen, T. (Author), Xiao, R. (Author), Zhang, B. (Author), Zhou, J. (Author)
Format: Article
Language:English
Published: Optica Publishing Group (formerly OSA) 2022
Subjects:
All fiber
Angular momentum
Cross structures
Diffraction gratings
Fiber lasers
Fibers
Graphene
Long-period fibre gratings
Optical tweezers
Orbital angular momentum
Passively Q-switched
Passively Q-switched lasers
Pulse generation
Q switched lasers
Q switching
Q-switched fiber lasers
Refractive index
Refractive-index modulation
Saturable absorbers
Third order
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