Mode-hop-free tuning over 135 GHz of external cavity diode lasers without anti-reflection coating

We report an external cavity diode laser (ECDL), using a diode whose front facet is not antireflection (AR) coated, that has a mode-hop-free (MHF) tuning range greater than 135 GHz. We achieved this using a short external cavity and by simultaneously tuning the internal and external modes of the laser. We find that the precise location of the pivot point of the grating in our laser is less critical than commonly believed. The general applicability of the method, combined with the compact portable mechanical and electronic design, makes it well suited for both research and industrial applications.Comment: 5 pages, 5 figure

Actionneurs thermiques appliqués à un micro-banc optique en silicium : application à un microfiltre de Fabry-Perot.

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Fabrication and characterization of high-Q microresonators using thin plate mechanical mod.

International audienc

Comparison of High Q microresonators operating on a thin plate mode : the Lamé-mode

International audienceThe modern communications means use a wide range of frequencies to transmit, code or decrypt information. These tasks are usually performed via different micro-electro-mechanical system (MEMS). The aim of this paper is to present and compare different design of microresonators realized in single crystal silicon using Deep Reactive Ion Etching (DRIE) techniques. The devices are electrostatically driven and use a thin plate mechanical mode: the Lamé-mode. This mode depends on the geometric dimensions of the vibrating plate and grants a high quality factor for each device. The characterization has been carried out under an optical test bench using a heterodyne laser probe. The results show a quality factor between 1000 to 4500 at 10.3 MHz in air

Comparison of High Q microresonators operating on a thin plate mode : the Lamé-mode

International audienceThe modern communications means use a wide range of frequencies to transmit, code or decrypt information. These tasks are usually performed via different micro-electro-mechanical system (MEMS). The aim of this paper is to present and compare different design of microresonators realized in single crystal silicon using Deep Reactive Ion Etching (DRIE) techniques. The devices are electrostatically driven and use a thin plate mechanical mode: the Lamé-mode. This mode depends on the geometric dimensions of the vibrating plate and grants a high quality factor for each device. The characterization has been carried out under an optical test bench using a heterodyne laser probe. The results show a quality factor between 1000 to 4500 at 10.3 MHz in air