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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 5,
  • Issue 7,
  • pp. 415-417
  • (2007)

Acousto-optic Q-switched cladding-pumped ytterbium-doped fiber laser

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Abstract

A diode-pumped, acousto-optic Q-switched fiber laser is presented based on multimode ytterbium-doped fiber. The fiber with core diameter of 30 microns is used to increase the laser gain volume and the pulse energy efficiently. The average power in excess of 9 W is obtained at the repetition rate of 20 kHz with 66% slope efficiency. The pulse width is 198 ns with no evident amplified spontaneous emission between pulses, thus the pulse energy and peak power are 465 microjoule and 2.36 kW, respectively.

© 2007 Chinese Optics Letters

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