DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kim, Byoung Yoon | - |
dc.contributor.advisor | 김병윤 | - |
dc.contributor.author | Lee, Eunjoo | - |
dc.date.accessioned | 2019-08-22T02:40:59Z | - |
dc.date.available | 2019-08-22T02:40:59Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734290&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/264634 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 물리학과, 2018.2,[iv, 74 p. :] | - |
dc.description.abstract | Wavelength-swept lasers are fast becoming a key element of optical coherence tomography (OCT) with high speed, resolution, and sensitivity. Various designs of wavelength-swept lasers have been investigated to improve the performance for OCT applications, especially to increase the sweep speed. For a decade, the fundamental limit of the sweep speed of laser has been solved with novel designs based on km-long optical fiber cavity and a very small cavity tuned by micro-electromechanical systems. But relying on the mechanical tuning for wavelength sweep is a drawback concerning the long-time stability and improving the speed even more. There have also been increasing concerns about the insufficient bandwidth of data acquisition for high-speed OCT with extended depth range. To solve the addressed problems efficiently, wavelength-stepping without movable components is required. In this thesis, we have developed and characterized a wavelength-stepped fiber laser in combination with the simple active mode-locking technique. Individual control and noise characterization of each wavelength step were demonstrated for the first time. This novel design provides possibilities for a high number of wavelength steps, high repetition with shorter cavity length, and narrow optical linewidth, that are advantageous for applications including optical coherence tomography. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Wavelegnth swept laser▼aMode-locked laser▼aFiber laser▼aEribum doped fiber | - |
dc.subject | 파장훑음 레이저▼a모드잠금 레이저▼a광섬유 레이저▼a어븀 도핑 광섬유▼a광 간섭 단층촬영 | - |
dc.title | Wavelength-stepped, actively mode-locked fiber laser | - |
dc.title.alternative | 파장이 불연속적으로 변화하는 능동 모드 잠금 광섬유 레이저 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :물리학과, | - |
dc.contributor.alternativeauthor | 이은주 | - |
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