Computer Science – Other Computer Science
Scientific paper
2007-11-21
Dans Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS - DTIP 2006, Stresa, Lago Maggiore : Italie (2006)
Computer Science
Other Computer Science
Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)
Scientific paper
We present a simple technique to produce active Q-switching in various types of fiber amplifiers by active integration of an electrostatic actuated deformable metallic micro-mirror. The optical MEMS (MOEMS) device acts as one of the laser cavity reflectors and, at the same time, as switching/ modulator element. We aim to obtain laser systems emitting short, high-power pulses and having variable repetition rate. The electro-mechanical behavior of membrane (bridge-type) was simulated by using electrostatic and modal 3D finite element analysis (FEA). The results of the simulations fit well with the experimental mechanical, electrical and thermal measurements of the components. In order to decrease the sensitiveness to fiber-mirror alignment we are developing novel optical devices based on stressed-metal cantilever-type geometry that allow deflections up to 50 $\mu$m with increased reflectivity discrimination during actuation.
Barthelemy Agnes
Blondy P.
Bouyge D.
Couderc Vincent
Crunteanu A.
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