David Sabourdy

Deformable micro-electro-mechanical mirror integration in a fibre laser Q-switch system

We demonstrated active Q-switching of an erbium-doped fibre laser using a deformable metallic micro-mirror. The electrostatically actuated micro-mirror acts as one of the laser cavity reflectors and, at the same time, as a switching/modulator element. When actuated, its shape changes from planar to a concave curvature, allowing control of the Q-factor of the laser cavity. The mirror/switching element is small, compact, highly reflective and achromatic, with a great integration potential. The laser system operates at frequencies between 20 and 120 kHz and generates short pulses (FWHM down to 300 ns) and high peak powers, up to 160 times greater than the continuous emission.

Synchronized Tunable

We report the synchronization of actively -switched erbium- and ytterbium-doped fiber lasers by means of a single electrostatically actuated deformable metallic micromirror. Synchronized and tunable pulse trains were generated at 1.064 and 1.55 mum with a pulse duration and repetition rate of ~1.5 mus and 32 kHz, respectively. The output dual wavelength beam is then converted in a nonlinear crystal designed for sum frequency generation. Tunable output red radiation close to 630 nm is obtained.

Q

We demonstrated active Q-switching of an erbium-doped fiber laser by using an electrostatically actuated deformable metallic micro-mirror. Q-switch operation has been demonstrated with frequencies up to 120 kHz and short pulses down to 300 ns.

-Switched Fiber Lasers Using Deformable Achromatic Microelectromechanical Mirror

Synchronization of actively Q-switched Erbium and Ytterbium doped fiber lasers with a single electrostatically actuated deformable metallic micro-mirror is reported. Sum frequency generation in PPLN crystal leading to a tunable red radiation is demonstrated.