Passive mode locking of rare-earth-doped fiber laser희토류첨가 광섬유레이저의 수동형 모드록킹

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dc.contributor.advisorLee, Hai-Woong-
dc.contributor.advisorKim, Byoung-Yoon-
dc.contributor.advisor이해웅-
dc.contributor.advisor김병윤-
dc.contributor.authorOh, Wang-Yuhl-
dc.contributor.author오왕열-
dc.date.accessioned2011-12-14T07:27:25Z-
dc.date.available2011-12-14T07:27:25Z-
dc.date.issued1997-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=114934&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/47568-
dc.description학위논문(박사) - 한국과학기술원 : 물리학과, 1997.2, [ iv, 97 p. ]-
dc.description.abstractThe importance of passive mode locking of the fiber laser using the nonlinear Kerr effect has been stressed in recent years. In particular, passive mode locking of the all-fiber lasers using nonlinear fiber loop mirrors, such as the nonlinear optical loop mirror(NOLM) or the nonlinear amplifying loop mirror(NALM), has been shown to have a great potential for practical applications, e.g. high speed communication and fast optical switching. In this paper, the characteristics of the NOLM, which is a key element for such passively mode-locked all-fiber lasers, were investigated. The reflectivity analysis of the NOLM by modeling the fiber loop as an elliptic retarder has given a good description about the polarization and spectral characteristics of the passively mode-locked pulses. The role that the loop birefringence plays in the passively mode-locked fiber laser system was understood through this study. A stable and easy-starting passively mode-locked fiber laser, whose cavity was formed with a NALM at one end and a Faraday rotator mirror(FRM) at the other, was demonstrated. Our theoretical analysis based on the laser eigenmode theory showed several interesting features which explained how such stable and easy-starting passive mode locking was achieved when a FRM was inserted as one of the laser cavity mirrors. Our experimental observations have confirmed that, when a FRM was used in place of an ordinary planar mirror, passive mode locking started much more easily and passively mode-locked pulses were very stable. The width of the shortest pulse that we obtained was about 442fs assuming a Gaussian envelope, and the repetition rate was 4.3MHz which was equal to the inverse of one cavity round trip time. A passively mode-locked figure-eight-laser(F8L) with a wavelength tunability and a harmonically mode-locked fiber laser with an all-fiber acousto-optic tunable filter(AOTF) were also briefly demonstrated. The tunable soliton F8L showed discrete tunability over t...eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.titlePassive mode locking of rare-earth-doped fiber laser-
dc.title.alternative희토류첨가 광섬유레이저의 수동형 모드록킹-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN114934/325007-
dc.description.department한국과학기술원 : 물리학과, -
dc.identifier.uid000935217-
dc.contributor.localauthorOh, Wang-Yuhl-
dc.contributor.localauthor오왕열-
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PH-Theses_Ph.D.(박사논문)
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