Study and Application of Birefringent Nanoporous GaN in the Polarization Control of Blue Vertical-Cavity Surface-Emitting Lasers

III-Nitride vertical-cavity surface-emitting lasers (VCSELs) have attracted much attention during the last two decades. Control of the laser polarization in VCSELs is one of the main challenges that needs to be addressed for real applications. In this work a novel polarization locking technique for...

Full description

Saved in:
Bibliographic Details
Published inACS photonics Vol. 8; no. 4; pp. 1041 - 1047
Main Authors Elafandy, Rami T, Kang, Jin-Ho, Mi, Chenziyi, Kim, Tae Kyoung, Kwak, Joon Seop, Han, Jung
Format Journal Article
LanguageEnglish
Published American Chemical Society 21.04.2021
Subjects
birefringence
gallium nitride
nanoporous
DBR
VCSEL
polarization locking
Online AccessGet full text

Cover

More Information
Summary:III-Nitride vertical-cavity surface-emitting lasers (VCSELs) have attracted much attention during the last two decades. Control of the laser polarization in VCSELs is one of the main challenges that needs to be addressed for real applications. In this work a novel polarization locking technique for GaN VCSELs is presented by employing birefringent nanoporous distributed Bragg reflectors (DBRs). The birefringence arises from a nanophotonic effect of evanescent field enhancement in the anisotropically aligned nanopores. Furthermore, the birefringence dependence over the nanopores morphology is explored. A fully electrically injected blue VCSEL with polarization locking is demonstrated. As presented, this technique allows to individually define the polarization angle in a planar array, opening the path to novel applications.
ISSN:2330-4022
2330-4022
DOI:10.1021/acsphotonics.1c00211