A vertical cavity surface emitting laser is provided which controls the reflectivity at the middle portion and the peripheral portion of the mirror with a simple structure to cause oscillation of a single lateral mode by use of a mirror having the refractive index changing periodically in the mirror plane direction. In some cases, the insert information can be advertisements or offers, and the insert information can be included with a primary component or printed on a primary component. The lead frame includes a plurality of elongate IO leads arranged about the die attach pad and extending in said first direction. Relations are based on positions in the source, labels on these positions and ranges from the labels indicating the length of the relation.