6533b7d3fe1ef96bd125fe65

RESEARCH PRODUCT

Passive compensation of the thermal drift of magnetostriction based Q-switched fiber lasers

Jose L. CruzPere Pérez-millánAntonio DiezMiguel V. Andrés

subject

Optical fiberMaterials sciencebusiness.industryPhysics::OpticsPolarization-maintaining optical fiberLong-period fiber gratingGraded-index fiberAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionOpticsFiber Bragg gratingFiber optic sensorlawFiber laserDispersion-shifted fiberPhysics::Atomic PhysicsElectrical and Electronic EngineeringPhysical and Theoretical Chemistrybusiness

description

Abstract The authors propose and demonstrate a method to compensate the thermal drift of magnetostriction based Q-switched fiber lasers, which is caused by the eddy currents induced in the Terfenol-D magnetostrictive actuators. The consequent wavelength detuning between the fiber gratings of the laser is passively compensated by the use of Monel 400 as thermal actuator of the non-modulated grating. A highly stable pulsed signal is achieved in the range of 1 Hz–5 kHz, with a wavelength detuning between gratings maintained below 10 pm. Furthermore, an optimization of the use of the pump power is proposed, utilizing part of it for simultaneously pumping a fiber optic based amplification stage.

yearjournalcountryeditionlanguage
2009-02-01Optics Communications
https://doi.org/10.1016/j.optcom.2008.10.066