Design and characterization of near-infrared organic dyes coupling to silicon ring microcavity and silicon photonic crystal nanocavity

• Main Authors: Lin, Chunchi, 林崇致
• Other Authors: Lee, Ming-Chang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/16003265843197908959

碩士 === 國立清華大學 === 光電工程研究所 === 103 === In recently years, the semiconductor process technology have a substantial advances; however, it still suffer the physical limit of material. For reach the Moore’s law, the advances of integrated optics is the key subject. The resonant cavities are the essential elements in the integrated optics. Here we select the near-infrared organic laser dye IR-26 to be the gain medium, then measure and design the resonant cavity which its resonance wavelength at 1310 nm. The characteristic of slot ring microcavity have been measured to assess the probability of combination with IR-26. Then we optimize the slot ring structure and design the better measurement to collect the data. Based on the slot ring mucrocavity’s result, we further design the photonic crystal nanocavity. Here we utilize the finite-difference time-domain to simulate the 2-D photonic crystal slab nanocavity on the silicon on insulator, and the design resonant wavelength at 1310 nm. By adjusting the air hole around the cavity and adding a slot in cavity center, we optimize the cavity’s quality factor and mode volume, enhance its light-matter interaction. For increasing the vertical emission efficiency, the extra cyclical changes be added on the structure around the cavity to transform the far-field profile. It’s also mean the vertical coupling efficiency be increased too. With the IR-26, the cavity can be a LED or laser.