Q-switch all-fiber laser pulsed by high order modes

D. Sáez-Rodríguez, J.L. Cruz, Antonio Díez, Yuri O. Barmenkov, Miguel V. Andrés

Research output: Contribution to journalArticlepeer-review


In this letter, we demonstrate an all-fiber Q-switch laser in erbium-doped fiber using an intracavity loss modulator that controls the power transmitted by a cladding mode. The cladding mode is coupled by a pair of concatenated long period gratings; pulsed regime is achieved by dynamic attenuation of the power transmitted by the cladding mode, and attenuation is caused by lateral compression with a piezoelectric transducer. The pulse sequence can be controlled from a single shot up to repetition rates of 2 kHz. The laser performance is analyzed as a function of the pump power and emission frequency; pulses having a peak power of 4 W and a duration of ∼ 80 ns can be generated with an absorbed pump of 100 mW.

Original languageEnglish
Pages (from-to)1058-1061
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number11
Early online date24 Apr 2013
Publication statusPublished - 1 Jun 2013


  • fiber laser
  • long period fiber grating
  • piezoelectric transducer
  • Q-Switch


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