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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 11,
  • Issue 7,
  • pp. 071401-
  • (2013)

Q-switched pulse generation from an all-f iber distributed Bragg reflector laser using graphene as saturable absorber

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Abstract

A Q-switched distributed Bragg reflector fiber laser using a graphene passive saturable absorber is proposed in a cavity consisting of a fiber Bragg grating and Faraday rotator mirror as end mirrors, together with a highly doped erbium-doped fiber as a gain source. The laser has a Q-switched threshold of about 28 mW and a tunable repetition rate of 10.4-18.0 kHz with varying pump power. The shortest pulse width obtained from the system is 3.7 <i>μ</i>s, with a maximum pulse energy and peak power of 22.2 nJ and 3.4 mW, respectively.

© 2013 Chinese Optics Letters

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