Tungsten disulphide based all fiber Q-switching cylindrical-vector beam generation

Journal Article · Sun Nov 08 23:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4935465· OSTI ID:22486033

Lin, J.; Yan, K.; Zhou, Y. ^[1]; Gu, C. ^[1]; Zhan, Q. W. ^[2]

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1. Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026 (China)
2. Electro-Optics Program, University of Dayton, Dayton, Ohio 45469 (United States)

We proposed and demonstrated an all fiber passively Q-switching laser to generate cylindrical-vector beam, a two dimensional material, tungsten disulphide (WS{sub 2}), was adopted as a saturable absorber inside the laser cavity, while a few-mode fiber Bragg grating was used as a transverse mode-selective output coupler. The repetition rate of the Q-switching output pulses can be varied from 80 kHz to 120 kHz with a shortest duration of 958 ns. Attributed to the high damage threshold and polarization insensitivity of the WS{sub 2} based saturable absorber, the radially polarized beam and azimuthally polarized beam can be easily generated in the Q-switching fiber laser.

• OSTI ID: 22486033
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 19 Vol. 107; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CYLINDRICAL CONFIGURATION
FIBERS
KHZ RANGE
LASER CAVITIES
LASERS
POLARIZATION
POLARIZED BEAMS
PULSES
Q-SWITCHING
TUNGSTEN
TUNGSTEN SULFIDES
TWO-DIMENSIONAL SYSTEMS