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Design of an air-slot mode-gap nanocavity in a two dimensional photonic crystal slab |
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| Authors: | Cheng Ren Feng Kang Lin Gan Shuai Feng LiFeng Cheng ZhiYuan Li |
| Institution: | 1. School of Opto-Electronic Information Science and Technology, Yantai University, Yantai, 264005, China 2. Wenjing College, Yantai University, Yantai, 264005, China 3. Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China 4. Academy of Science, Minzu University of China, Beijing, 100081, China |
| Abstract: | We present a novel and simple design of an air-slot mode-gap photonic crystal (PC) nanocavity by introducing a linear air slot to the center of a line-defect waveguide in a two dimensional triangular-lattice silicon PC slab. A high quality factor (Q factor) of 8.42×105 and an ultrasmall mode volume of 0.998 cubic wavelength are achieved in an optimized air-slot nanocavity which is a suitable choice for the strong matter-field interaction in free space. The high Q cavities with ultrasmall mode volume are important for applications such as quantum computation and nonlinear optics. |
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