Abstract
<p style="padding:2px; border: 0.05em solid; margin: 2px">It has come to the attention of the Optical Society of America that this article should not have been submitted owing to its substantial replication, without appropriate attribution, of significant elements found in the following previously published material: A. Crunteanu, D. Bouyge, D. Sabourdy, P. Blondy, V. Couderc, L. Grossard, P. H. Ploger and A. Barthelemy, "Deformable micro-electromechanical mirror integration in a fibre laser Q-switched system," J. Opt. A: Pure Appl. Opt. 8 S347-S351 (2006).</p>In this paper, active Q-switching of a double clad codoped erbium-Ytterbium fiber laser using a deformable metallic micro-mirror system is demonstrated. The electrostatically actuated micro-mirror acts both as the end laser cavity reflector and as 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 200 kHz and generates short pulses (FWHM down to 300 ns) and high peak powers.
Highlights
Since a few years, the association of micro-optics and micro-electro-mechanical systems (MEMS) creates a new and relatively broader area of devices, the micro-opto-electromechanical systems (MOEMS)
Tunable or high-power micro-lasers are key components in future optical networks. Within this framework MOEMS technology has been shown very promising for fabrication of miniaturized tunable [2] or pulsed fiber lasers [3] with adding merits of compactness, high speed and batch, low-cost production
The conventional solutions for laser Q-switch generation are based on solid, mature technologies, most of them present inherent disadvantages that restrain their integration in miniature, compact laser systems: degradation of the beam quality, high insertion losses for the acousto-optic modulators [5], high voltages and low modulation frequencies for the electro-optics solutions [6], bulkiness for mechanical choppers, low laser power levels operation for piezoelectric Bragg gratings systems [7] or lack of control of frequency and pulse width for the passive modulators
Summary
The association of micro-optics and micro-electro-mechanical systems (MEMS) creates a new and relatively broader area of devices, the micro-opto-electromechanical systems (MOEMS). Tunable or high-power micro-lasers are key components in future optical networks Within this framework MOEMS technology has been shown very promising for fabrication of miniaturized tunable [2] or pulsed fiber lasers [3] with adding merits of compactness, high speed and batch, low-cost production. The generation of short, high-power pulses with variable repetition rate is reported The advantages of such an element reside on its low fabrication cost and its high potential of integration in a compact micro-system
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