Light emitting element

A light emitting element comprising at least:

• a first light reflecting layer formed on a surface of a substrate;
• a laminated structural body made of a first compound semiconductor layer, an active layer, and a second compound semiconductor layer formed on the first light reflecting layer;
• and
• a second electrode and a second light reflecting layer formed on the second compound semiconductor layer, wherein
• the laminated structural body is configured from a plurality of laminated structural body units,
• a light emitting element unit is configured from each of the laminated structural body units,
• a top face of the first compound semiconductor layer has a step-like shape,
• one laminated structural body unit is configured from a portion of the laminated structural body including the top face of the first compound semiconductor layer, the top face being equivalent to one tread, and
• a resonator length in the light emitting element unit is different in every light emitting element unit.

A light emitting element comprising at least:

• a first light reflecting layer formed on a smooth surface of a substrate having an off angle with respect to a crystal plane of the substrate;
• a laminated structural body made of a first compound semiconductor layer, an active layer, and a second compound semiconductor layer formed on the first light reflecting layer;
• and
• a second electrode and a second light reflecting layer formed on the second compound semiconductor layer, wherein
• a thickness of the first compound semiconductor layer is smoothly increased in the light emitting element in a direction parallel with a surface of the substrate.