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Controlled waveguide coupling for photon emission from colloidal PbS quantum dot using tunable microcavity made of optical polymer and silicon |
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| Affiliation: | 1. Department of Optoelectronics, University of Kerala, Kariavattom 695581, India;2. Department of Physics, University of Kerala, Kariavattom 695581, India;1. Department of Physics, Baku State University, 23 Z.Khalilov st., AZ 1148, Baku, Azerbaijan;2. Institute of Physics, 131 H.Javid ave., AZ 1143, Baku, Azerbaijan;1. Institute of Materials Science and Engineering, National Central University, Taoyuan 320, Taiwan;2. Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan |
| Abstract: | A tunable microcavity device composed of optical polymer and Si with a colloidal quantum dot (QD) is proposed as a single-photon source for planar optical circuit. Cavity size is controlled by electrostatic micromachine behavior with the air bridge structure to tune timing of photon injection into optical waveguide from QD. Three-dimensional positioning of a QD in the cavity structure is available using a nanohole on Si processed by scanning probe microscope lithography. We fabricated the prototype microcavity with PbS-QD-mixed polymenthyl methacrylate on a SOI (semiconductor-on-insulator) substrate to show the tunability of cavity size as the shift of emission peak wavelength of QD ensemble. |
| Keywords: | Colloidal quantum dot Microcavity Optical polymer Silicon Quantum information |
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