2D-VCSEL arrays utilizing elliptical disorder-defined apertures for simultaneous single-mode, singlepolarization operation are demonstrated. Optical losses induced by the disordered region in the periphery of the VCSEL suppress the capability of higher-order modes from lasing, achieving single-fundamental mode
operation. Furthermore, introducing eccentricity to the aperture creates an asymmetric threshold gain, or dichroism, that selectively suppresses one of the two polarization states inherent to VCSELs, resulting in single-polarization operation. The work presented here discusses the design, fabrication, and characterization results of the 2D-VCSEL arrays. The arrays are characterized for optical output power, single-mode performance via optical spectra measurements, and single-polarization performance via polarization-resolved light-current-voltage (PR-LIV) curves.
