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Subwavelength grating as both emission mirror and electrical contact for VCSELs in any material system

Tijdschriftbijdrage - Tijdschriftartikel

Semiconductor-metal subwavelength grating (SMSG) can serve a dual purpose in vertical-cavity surface-emitting lasers (VCSELs), as both optical coupler and current injector. SMSGs provide optical as well as lateral current confinement, eliminating the need for ring contacts and lateral build-in optical and current confinement, allowing their implementation on arbitrarily large surfaces. Using an SMSG as the top mirror enables fabrication of monolithic VCSELs from any type of semiconductor crystal. The construction of VCSELs with SMSGs requires significantly less p-type material, in comparison to conventional VCSELs. In this paper, using a three-dimensional, fully vectorial optical model, we analyse the properties of the stand-alone SMSG in a number of semiconductor materials for a broad range of wavelengths. Integrating the optical model with thermal and electrical numerical models, we then simulate the threshold operation of an exemplary SMSG VCSEL.
Tijdschrift: nature scientific reports
ISSN: 2045-2322
Volume: 7
Jaar van publicatie:2017
Trefwoorden:SURFACE-EMITTING LASERS, DISTRIBUTED BRAGG REFLECTORS, HIGH-CONTRAST GRATINGS, OPTICAL-PROPERTIES, INDEX, DISPERSION, GAAS
  • PubMed Central Id: PMC5228155
  • ORCID: /0000-0002-5215-1228/work/84711290
  • PubMed Id: 28079149
  • WoS Id: 000391674800002
  • Scopus Id: 85009471421
  • DOI: https://doi.org/10.1038/srep40348
CSS-citation score:1
Auteurs:International
Toegankelijkheid:Open