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- Title
Efficient All-Optical Molecule-Plasmon Modulation Based on T-shape Single Slit.
- Authors
Chen, Jianjun; Li, Zhi; Xiao, Jinghua; Gong, Qihuang
- Abstract
Efficient all-optical molecule-plasmon modulation is experimentally demonstrated by employing a compact T-shape single slit on a metal film coated with an azopolymer film, in which the azobenzene molecules can be reoriented by a pump beam. In the T-shape single slit, the transmission spectra exhibit periodic behaviors and are quite sensitive to variations of the refractive index of the azopolymer in the groove. Under a pump beam, the azobenzene molecules are reoriented, so the SPPs in the groove feel a refractive index quite different from that of the originally isotropic azopolymer with randomly orientations. This leads to a high modulation depth of about 53 % (3.3 dB) and a phase variation of > π experimentally.
- Subjects
PLASMONS (Physics); T-shaped radio interferometers; REFRACTIVE index; ELECTRONIC modulation; ISOTROPY subgroups
- Publication
Plasmonics, 2013, Vol 8, Issue 2, p233
- ISSN
1557-1955
- Publication type
Article
- DOI
10.1007/s11468-012-9380-2