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arXiv · 1002.0044

Circularly-Polarized Light Emission from Semiconductor Planar Chiral Photonic Crystal

Kuniaki Konishi·Masahiro Nomura·Naoto Kumagai·Satoshi Iwamoto·Yasuhiko Arakawa·Makoto Kuwata-Gonokami
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Abstract

We proposed and demonstrated a scheme of surface emitting circularly polarized light source by introducing strong imbalance between left- and right-circularly polarized vacuum fields in an on-waveguide chiral grating structure. We observed circularly polarized spontaneous emission from InAs quantum dots embedded in the wave guide region of a GaAs-based structure. Obtained degree of polarization reaches as large as 25% at room temperature. Numerical calculation visualizes spatial profiles of the modification of vacuum field modes inside the structure with strong circular anisotropy.

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Kuniaki Konishi, Masahiro Nomura, Naoto Kumagai, Satoshi Iwamoto, Yasuhiko Arakawa, Makoto Kuwata-Gonokami. 2010-01-30. Circularly-Polarized Light Emission from Semiconductor Planar Chiral Photonic Crystal. https://doi.org/10.1103/physrevlett.106.057402

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