DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 강명수 | - |
dc.contributor.author | Ha, Chang Kyun | - |
dc.contributor.author | 하창균 | - |
dc.date.accessioned | 2024-07-26T19:30:30Z | - |
dc.date.available | 2024-07-26T19:30:30Z | - |
dc.date.issued | 2023 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1046614&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/320843 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 물리학과, 2023.8,[ix, 98 p. :] | - |
dc.description.abstract | In nonlinear optics, tightly confined modes in subwavelength photonic waveguides have been expected to increase the efficiency of nonlinear interaction between lights with large wavelength difference because they possess various spatial structures and intriguing optical features. In this thesis, third-harmonic generation processes are experimentally implemented as an example of intermodally phase matched nonlinear effects in silica nanofibers, and their applicability was analyzed and presented. Firstly, tapered optical fiber supporting the adiabatic propagation of higher-order modes is demonstrated by adding the wet-etching technique on conventional flame brushing method. Also, widely tunable nearly transform-limited narrow-linewidth mode-locked fiber laser is implemented, which can be employed as a promising pump source for nonlinear frequency conversion with narrow phase-matching bandwidth and high group-velocity mismatch. Based on these two achievements, complete characterization of intermodally phase-matched third-harmonic generation in optical nanofiber is firstly realized. Finally, it is verified both in theory and experiment that optical vortex mode can be excited with single pump in fundamental mode via spin-orbit-interaction assisted third-harmonic generation. We believe that our work could contribute to the development of various optical technologies based on intermodal interaction between guided modes confined within photonic waveguides. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 나노 광섬유▼a비선형 광학▼a3차 조화파 생성▼a광 소용돌이▼a모드 잠금 광섬유 레이저 | - |
dc.subject | Optical nanofiber▼aNonlinear optics▼aThird-harmonic generation▼aOptical vortex▼aMode-locked fiber laser | - |
dc.title | Intermodally phase-matched nonlinear effects in optical nanofibers and their applications | - |
dc.title.alternative | 나노 광섬유에서의 공간모드간 위상정합된 비선형 효과와 그 응용에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :물리학과, | - |
dc.contributor.alternativeauthor | Kang, Myeong Soo | - |
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