Circularly polarized vacuum field in three-dimensional chiral photonic crystals probed by quantum dot emission
2017; American Physical Society; Volume: 96; Issue: 19 Linguagem: Inglês
10.1103/physrevb.96.195404
ISSN2469-9977
AutoresS. Takahashi, Yasutomo Ota, Takeyoshi Tajiri, Jun Tatebayashi, Satoshi Iwamoto, Yasuhiko Arakawa,
Tópico(s)Plasmonic and Surface Plasmon Research
ResumoThe modification of a circularly polarized vacuum field in three-dimensional chiral photonic crystals was measured by spontaneous emission from quantum dots in the structures. Due to the circularly polarized eigenmodes along the helical axis in the GaAs-based mirror-asymmetric structures involved, the authors observed highly circularly-polarized emission from the quantum dots. Both spectroscopic and time-resolved measurements confirmed that the obtained circularly-polarized light was influenced by a large difference in the photonic density of states between the orthogonal components of the circular polarization in the vacuum field.
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