Light emitting device and projector

A light emitting device comprising:

• a substrate;
• and
• a laminated structure provided to the substrate, and including a plurality of columnar parts, wherein
• the columnar part includes
• a first semiconductor layer,
• a second semiconductor layer different in conductivity type from the first semiconductor layer, and
• a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer,
• the first semiconductor layer is disposed between the substrate and the light emitting layer,
• the second semiconductor layer includes
• a third semiconductor layer, and
• a fourth semiconductor layer lower in impurity concentration than the third semiconductor layer,
• the light emitting layer has a facet plane,
• the fourth semiconductor layer has a facet plane,
• the facet plane of the light emitting layer is provided with the fourth semiconductor layer, and
• θ4>θ3, in which θ3 is a tilt angle of the facet plane of the light emitting layer with respect to a surface of the substrate provided with the laminated structure, and θ4 is a tilt angle of the facet plane of the fourth semiconductor layer provided to the facet plane of the light emitting layer with respect to the surface of the substrate.