Advanced quantum dot and photonic crystal technologies for integrated nanophotonic circuits
| Autor: | Yoshimasa Sugimoto, Nobuyuki Koguchi, Takaaki Mano, Nobuhiko Ozaki, Naoki Ikeda, Shunsuke Ohkouchi, Kazuaki Sakoda, Takashi Kuroda, Yoshinori Watanabe, Kiyoshi Asakawa, Tetsuyuki Ochiai, Keiji Kuroda |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
business.industry General Engineering Nanophotonics Physics::Optics Purcell effect Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Optical microcavity Optical switch law.invention Condensed Matter::Materials Science Optics Quantum dot law Optoelectronics Photonics business Photonic crystal Molecular beam epitaxy |
| Zdroj: | Microelectronics Journal. 40:736-740 |
| ISSN: | 0026-2692 |
| Popis: | Two types of nanophotonic technologies-two-dimensional photonic crystal (2D PC) slab waveguides (WGs) and quantum dots (QDs)-were developed for key photonic device structures in the future. For an ultrafast digital photonic network, an ultrasmall and ultrafast symmetrical Mach-Zehnder (SMZ)-type all-optical switch (PC-SMZ) and an optical flip-flop device (PC-FF) have been developed. To realize these devices, one method is to develop a selective-area molecular beam epitaxial growth QD technique by employing a metal mask method. Another method is to establish a new design method, i.e., topology optimization of the 2DPC WG with a wide and flat bandwidth, high transmittance, and low reflectivity. We also fabricated an optical microcavity in a photonic crystal slab embedded with GaAs QDs by droplet epitaxy. The Purcell effect on the exciton emission of GaAs QDs was confirmed by microphotoluminescence and lifetime measurements. |
| Databáze: | OpenAIRE |
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