Experimental study of the combined mode and polarization control in VCSELs with a sub-wavelength surface grating

Author

Haglund, Å ; Gustavsson, J.S. ; Jedrasik, P. ; Larsson, A.

Author_Institution

Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

2005

fDate

22-28 Oct. 2005

Firstpage

461

Lastpage

462

Abstract

This study investigates the combined mode- and polarization-control in 850-nm oxide-confined VCSELs having a locally etched sub-wavelength surface grating with different geometries. A high polarization stable single-mode output power and low threshold current can be achieved for a wide range of duty cycles, which facilitates the fabrication. Moreover, no degradation of the far-field is observed for the ensemble of investigated devices.

Keywords

diffraction gratings; etching; laser cavity resonators; laser modes; light polarisation; optical variables control; quantum well lasers; surface emitting lasers; VCSEL; combined mode control; far-field degradation; locally etched surface grating; oxide confinement; polarization control; polarization stability; quantum well laser; single-mode output power; subwavelength surface grating; Apertures; Etching; Gratings; Mirrors; Optical fiber polarization; Optical polarization; Optical surface waves; Power generation; Surface resistance; Vertical cavity surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2005. LEOS 2005. The 18th Annual Meeting of the IEEE

Print_ISBN

0-7803-9217-5

Type

conf

DOI

10.1109/LEOS.2005.1548078

Filename

1548078