A VCSEL including a substrate, a first semiconductor layer of a first
conductivity-type formed on the substrate, an active layer formed on the
first semiconductor layer, a second semiconductor layer of a second
conductivity-type formed on the active layer, a first electrode wiring
formed on a main surface of the substrate and electrically connected with
the first semiconductor layer, a second electrode wiring formed on the
main surface of the substrate and electrically connected with the second
semiconductor layer, and a light emitting portion formed on the substrate
for emitting laser light. A contact portion at which the first electrode
wiring is electrically connected to the first semiconductor layer is
formed in a range equal to or greater than .pi./2 radians and within .pi.
radians, centering on the light emitting portion.