20 February 2017 Optimization of VCSELs incorporating monolithic subwavelength high-refractive-index contrast surface grating mirrors
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Proceedings Volume 10113, High Contrast Metastructures VI; 101130E (2017) https://doi.org/10.1117/12.2253096
Event: SPIE OPTO, 2017, San Francisco, California, United States
Abstract
We present results of computer simulations of vertical cavity surface emitting lasers (VCSELs) using novel, highreflectivity monolithic high refractive-index contrast grating (MHCG) mirrors and their more advanced version, partially covered by a thin metal layer - metallic MHCG (mMHCG) mirrors. The first experimental realization of this new class of mirrors is presented and discussed. We show that the metal layer does not deteriorate the high reflectivity of an mMHCG mirror, but in contrary, is a crucial element which allows high reflectivity and additionally opens a way for a more efficient electrical pumping of a VCSEL. Comparison of results of thermal-electrical-carrier-gain self-consistent simulations of both MHCG- and mMHCG-based VCSELs is presented and discussed. It is shown that using mHCG mirror as a top mirror of a VCSEL improves electrical characteristics and greatly decreases the differential resistance of the device.
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Marcin Gębski, Magdalena Marciniak, Maciej Dems, Tomasz Czyszanowski, James A. Lott, "Optimization of VCSELs incorporating monolithic subwavelength high-refractive-index contrast surface grating mirrors", Proc. SPIE 10113, High Contrast Metastructures VI, 101130E (20 February 2017); doi: 10.1117/12.2253096; https://doi.org/10.1117/12.2253096
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