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Optimized sub-wavelength grating mirror design for mid infrared wavelength range

Abstract : Several subwavelength grating mirrors have been designed for VCSEL application in mid-infrared wavelength range (λ = 2.3 µm). These mirrors are automatically optimized thanks to a global algorithm which maximizes a specially defined quality factor for VCSEL top mirrors. Three different designs based on Si/SiO2, AlGaSb/GaSb and GaAs/AlOx are simulated and exhibit bandwidth as large as 206 nm. Also, the bandwidth is polarisation selective with a TM reflection coefficient higher than 99.9 % while TE coefficient is kept below 90 %. These reflectors present several fabrication solutions with a trade off between technological limitations, tolerances in regard to the fabrication error and mirror quality.
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Contributor : Christyves Chevallier Connect in order to contact the contributor
Submitted on : Tuesday, November 16, 2010 - 2:08:58 PM
Last modification on : Saturday, October 16, 2021 - 11:24:02 AM


  • HAL Id : hal-00536555, version 1


Christyves Chevallier, Nicolas Fressengeas, Frédéric Genty, Joël Jacquet. Optimized sub-wavelength grating mirror design for mid infrared wavelength range. Journées Nano, Micro et Optoélectronique, Sep 2010, Les Issambres, France. ⟨hal-00536555⟩



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