抄録
Circular dichroism covering the telecommunication band is experimentally demonstrated in a semiconductor-based three-dimensional chiral photonic crystal (PhC). We design a rotationally stacked woodpile PhC structure where neighboring layers are rotated by 60° and three layers construct a single helical unit. The mirror-asymmetric PhC made from GaAs with sub-micron periodicity is fabricated by a micro-manipulation technique. Due to the large contrast of refractive indices between GaAs and air, the experimentally obtained circular dichroism extends over a wide wavelength range, with the transmittance of right-handed circularly polarized incident light being 85% and that of left-handed light being 15% at a wavelength of 1.3 μ m. The obtained results show good agreement with numerical simulations.
本文言語 | English |
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論文番号 | 051107 |
ジャーナル | Applied Physics Letters |
巻 | 105 |
号 | 5 |
DOI | |
出版ステータス | Published - 2014 8月 4 |
外部発表 | はい |
ASJC Scopus subject areas
- 物理学および天文学(その他)