Active Q-switched distributed feedback erbium-doped fiber lasers

Pérez-Millán, P.; Cruz, J. L.; Andrés, M. V.
July 2005
Applied Physics Letters;7/4/2005, Vol. 87 Issue 1, p011104
Academic Journal
This letter presents a distributed feedback fiber laser that operates in an actively controlled Q-switched regime. The laser is based on a Bragg grating made in an erbium-doped fiber. The grating has a defect induced by a magnetostrictive transducer that configures the distributed feedback laser structure. The phase shift generated by the defect can be dynamically modified by an electric current, permitting active Q-switching of the laser. The laser generates pulses of 75 ns duration and the repetition rate can be continuously adjusted from 0 to 10 kHz.


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