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

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.
Authors:
; ;  [1] ; ;  [1] ;  [2] ;  [3]
  1. Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026 (China)
  2. (China)
  3. Electro-Optics Program, University of Dayton, Dayton, Ohio 45469 (United States)
Publication Date:
OSTI Identifier:
22486033
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 19; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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