| CPC H01S 5/11 (2021.01) [G03B 21/2033 (2013.01)] | 7 Claims |
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1. A light emitting device comprising:
a substrate; and
a stacked body provided to the substrate, and including a plurality of first columnar parts, wherein
the stacked body 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 and the light emitting layer constitute the first columnar parts,
the first semiconductor layer is disposed between the substrate and the light emitting layer,
the second semiconductor layer is provided with a plurality of recessed parts,
the recessed part is provided with a low refractive-index part lower in refractive index than the second semiconductor layer,
the plurality of the first columnar parts constitutes a first photonic crystal,
the second semiconductor layer and the low refractive-index parts constitute a second photonic crystal, and
the first photonic crystal and the second photonic crystal are optically coupled to each other,
wherein the second semiconductor layer has a portion disposed so as to straddle the plurality of the first columnar parts.
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