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Numerical simulations of single whispering-gallery mode enhancementin hollow cylindrical optical microcavity |
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| รหัสดีโอไอ | |
| Creator | 1. Unchittha Prasatsap 2. Suwit Kiravittaya |
| Title | Numerical simulations of single whispering-gallery mode enhancementin hollow cylindrical optical microcavity |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2565 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 1 |
| Page no. | 157-161 |
| Keyword | whispering-gallery mode, optical microcavity, finite-difference time-domain simulation, hollow cylinder, quality factor |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | In this work, a hollow cylindrical optical microcavity is numerically investigated by finite-difference time-domainsimulations. Enhancement of a single whispering-gallery mode (WGM) is realized by inserting a periodic hole array into thehollow cylindrical structure. Line of missing holes acts as an optical microcavity. Electric and magnetic field profiles of bothtypical and enhanced resonant modes are presented. Variations of the single-mode resonant frequency and its quality (Q) factorare studied as a function of structural parameters, which are hole radius, width of the missing hole line, and number of holes. Thiswork shows that the hole radius and the width of the missing hole line strongly affect both the resonant frequency and Q factorwhile varying the number of holes does not influence the resonant frequency, but they monotonically change the Q factor. Thiswork provides information for designing and optimizing an WGM optical microcavity. |
