Light emitting element and distance measuring apparatus

A light emitting element comprising:

• a first reflection mirror provided on a semiconductor substrate;
• a second reflection mirror provided on the first reflection mirror;
• a resonator provided between the first reflection mirror and the second reflection mirror;
• an active layer included in the resonator, the active layer comprising a quantum well layer and a barrier layer;
• a doped layer provided on at least one of a side of the active layer facing the semiconductor substrate and a side opposite to the semiconductor substrate;
• and
• a spacer layer provided between the doped layer and the barrier layer and having a band gap larger than a band gap of the barrier layer,
• wherein a doping concentration of the spacer layer is lower than a doping concentration of the doped layer, and
• wherein the light emitting element is configured to emit light having a profile including a maximum peak value and converging to a stable value, which is a predetermined light intensity, after the maximum peak value.