INTEGRATION OF MICRO-ELECTRO-MECHANICAL DEFORMABLE MIRRORS IN DOPED FIBER AMPLIFIERS

David Bouyge (1) , David Sabourdy (2) , Aurelian Crunteanu (1) , Pierre Blondy (1) , Vincent Couderc (2) , Jérôme Lhermite (2) , Ludovic Grossard (2) , Alain Barthélémy (2)

1 MINACOM
2 PHOTONIQUE

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 µm with increased reflectivity discrimination during actuation.

Mots clés: Deformable mirror; fiber laser; Q-switch; FEM simulation; mechanical and optical characterization

Domaines: Architectures Matérielles [cs.AR]

David Bouyge, David Sabourdy, Aurelian Crunteanu, Pierre Blondy, Vincent Couderc, et al.. INTEGRATION OF MICRO-ELECTRO-MECHANICAL DEFORMABLE MIRRORS IN DOPED FIBER AMPLIFIERS. DTIP 2006, Apr 2006, Stresa, Lago Maggiore, Italy. pp.6. ⟨hal-00189292⟩