DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 서민교 | - |
dc.contributor.author | Yun, Sanghee | - |
dc.contributor.author | 윤상희 | - |
dc.date.accessioned | 2024-07-25T19:30:57Z | - |
dc.date.available | 2024-07-25T19:30:57Z | - |
dc.date.issued | 2023 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1045779&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/320591 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 물리학과, 2023.8,[iv, 24 p. :] | - |
dc.description.abstract | I investigated lithium niobate (LN) photonic crystal nanobeam cavities as a high-quality factor (Q) to mode volume (V) ratio optical platform. The LN photonic crystal nanobeam cavity was designed to demonstrate a transverse-electric fundamental mode with a Q/V ratio of 1.6 × 10^7 (λ/n)^−3, using numerical simulations by the finite element method and the finite-time time-domain method. The LN photonic crystal nanobeam cavity was created as a free-standing structure using focused ion beam (FIB) milling and a wet-etching process, resulting in a high sidewall angle of 85 °. Employing a U-shaped tapered optical fiber, I characterized the LN photonic crystal nanobeam cavity. The measured intrinsic Q factor and expected Q/V ratio were 6.7 × 10^3 and 7.9 × 10^3 (λ/n)^−3, respectively. The experimentally obtained Q factor was lower than the theoretical value due to downward bending and the insufficient buffer air layer of the free-standing LN photonic crystal cavity. Utilizing a thicker LN film and buffer layer would enhance the Q/V ratio of the photonic crystal cavity, thereby demonstrating potential for quantum optical and optomechanical applications in the future. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 박막 리튬 나이오베이트▼a광결정 공진기▼a이온빔 식각▼a품위 계수 | - |
dc.subject | Thin-film Lithium Niobate▼aPhotonic crystal cavity▼aFocused ion beam milling▼aQuality factor | - |
dc.title | High-Q/V LiNbO3 photonic crystal nanobeam cavity | - |
dc.title.alternative | 높은 품위계수-모드부피 비 LiNbO3 광결정 공진기 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :물리학과, | - |
dc.contributor.alternativeauthor | Seo, Min-Kyo | - |
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