Light emitting element and method for manufacturing same

A light emitting element, comprising:

• a layered structure that includes:
• a first compound semiconductor layer having a first surface and a second surface opposite to the first surface,
• an active layer that faces the second surface of the first compound semiconductor layer, and
• a second compound semiconductor layer having a third surface that faces the active layer, and a fourth surface opposite to the third surface;
• a substrate;
• a first light reflecting layer on a side of the first surface of the first compound semiconductor layer;
• and
• a second light reflecting layer on a side of the fourth surface of the second compound semiconductor layer, wherein
• the second light reflecting layer has a flat shape,
• a surface of the substrate has a concave surface portion,
• the first light reflecting layer is on at least the concave surface portion,
• the first compound semiconductor layer extends from the surface of the substrate on the concave surface portion,
• the first light reflecting layer and a portion of the first compound semiconductor layer on the concave surface portion form a resonator structure,
• the active layer is configured to emit first light that have an oscillation wavelength λ0,
• the oscillation wavelength λ0 satisfies a resonance condition of the resonator structure based on a length of the resonator, and
• second light having a wavelength λ′ adjacent to the oscillation wavelength λ0 does not satisfy the resonance condition of the resonator structure based on the length of the resonator.

A method for manufacturing a light emitting element, the method comprising:

• forming a concave surface portion on a surface of a substrate;
• forming a first light reflecting layer on at least the concave surface portion;
• forming a layered structure on the surface of the substrate and the concave surface portion, wherein the layered structure includes a first compound semiconductor layer, an active layer, and a second compound semiconductor layer;
• forming a second light reflecting layer on the second compound semiconductor layer.