6533b7d5fe1ef96bd1263d4b
RESEARCH PRODUCT
Doubly active Q switching and mode locking of an all-fiber laser
Christian Cuadrado-labordeJose L. CruzAntonio DiezMiguel V. Andréssubject
Materials sciencebusiness.industryLaserQ-switchingAtomic and Molecular Physics and Opticslaw.inventionAmplitude modulationOpticsFiber Bragg gratingMode-lockingModulationlawQ factorFiber laserbusinessdescription
Simultaneous and independent active Q switching and active mode locking of an erbium-doped fiber laser is demonstrated using all-fiber modulation techniques. A magnetostrictive rod attached to the output fiber Bragg grating modulates the Q factor of the Fabry-Perot cavity, whereas active mode locking is achieved by amplitude modulation with a Bragg-grating-based acousto-optic device. Fully modulated Q-switched mode-locked trains of optical pulses were obtained for a wide range of pump powers and repetition rates. For a Q-switched repetition rate of 500 Hz and a pump power of 100 mW, the laser generates trains of 12-14 mode-locked pulses of about 1 ns each, within an envelope of 550 ns, an overall energy of 0.65 microJ, and a peak power higher than 250 W for the central pulses of the train.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-09-04 |