A vertical-cavity surface-emitting laser including an annular upper electrode disposed on a laser light exit surface, wherein an upper electrode aperture is formed therein and a light blocking layer is positioned at the center of the aperture formed in the upper electrode. The light blocking layer partially blocks laser light emitted from the vertical-cavity surface-emitting laser, providing a difference in reflectance in a transverse direction of the vertical-cavity surface-emitting laser, facilitating single mode oscillation.