Title :
Mechanism of polarisation pinning in vertical cavity surface emitting lasers using focused ion beam etching
Author :
Sargent, L.J. ; Rorison, J.M. ; White, Ian H. ; Penty, Richard V. ; Kuball, M. ; Heard, P.J. ; Tan, M.R.T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bristol Univ., UK
Abstract :
Summary form only given. Vertical-cavity surface emitting lasers (VCSEL) are attractive light sources, particularly suited to applications requiring two-dimensional laser arrays. However, if they are employed in polarisation-sensitive applications, methods of controlling the polarisation state of the VCSEL emission are required. Previous work has shown that the etching of deep trenches close to the VCSEL apertures consistently causes the polarisation pinning of the emission in a polarisation parallel to the etch. For the first time, the mechanism of this phenomenon is investigated.
Keywords :
focused ion beam technology; laser arrays; laser cavity resonators; light polarisation; sputter etching; surface emitting lasers; VCSEL; deep trenches etching; focused ion beam etching; light sources; polarisation control; polarisation pinning; polarisation pinning mechanism; polarisation-sensitive applications; two-dimensional laser arrays; vertical cavity surface emitting lasers; Apertures; Capacitive sensors; Etching; Fabry-Perot; Gallium arsenide; Ion beams; Photoluminescence; Polarization; Surface emitting lasers; Vertical cavity surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.834480
