DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Yong-Hee | - |
dc.contributor.advisor | 이용희 | - |
dc.contributor.author | Kim, Se-Heon | - |
dc.contributor.author | 김세헌 | - |
dc.date.accessioned | 2011-12-14T07:56:37Z | - |
dc.date.available | 2011-12-14T07:56:37Z | - |
dc.date.issued | 2002 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=173518&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/48582 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 물리학과, 2002.2, [ [ii], 55 p. ] | - |
dc.description.abstract | This study describes lasing action in ring-type resonators defined by two-dimensional photonic crystals on a free-standing slab with InGaAsP active layers emitting at 1.55㎛. Free-standing photonic crystal slab structures are fabricated by using electron-beam lithography, chemically-assisted ion-beam etching, and undercut wet etching. The fabricated structures are pulse-pumped by a 980-nm laser diode at room temperature. Lasing actions from samples with various ring sizes are observed. A spectrum of a typical ring laser at above threshold shows the lasing wavelength of 1620 nm. An L-L curve shows a threshold pump power of ~3 mW. The lasing mode of the photonic crystal ring resonator originates from the true ring-type mode, which is confirmed by the observation of spectra and near-field images. The quality factor of the ring resonator is measured from the below threshold linewidth, which sets the lower bound as ~2000. The photonic crystal ring laser consists of 6 waveguides and 6 bent regions. Therefore, this structure is used to estimate the propagation loss in a photonic crystal waveguide. Using the reasonable value of group index of waveguide, propagation loss is less than $60 cm^{-1}$. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 광결정 | - |
dc.subject | 광밴드갭 | - |
dc.subject | 광소자 | - |
dc.subject | 반도체 레이저 | - |
dc.subject | photonic band gap | - |
dc.subject | photonic crystal | - |
dc.subject | photonic crystal waveguide | - |
dc.subject | semiconductor laser | - |
dc.title | Two-dimensional photonic crystal ring laser | - |
dc.title.alternative | 이차원 광결정 고리형 레이저 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 173518/325007 | - |
dc.description.department | 한국과학기술원 : 물리학과, | - |
dc.identifier.uid | 020003091 | - |
dc.contributor.localauthor | Kim, Se-Heon | - |
dc.contributor.localauthor | 김세헌 | - |
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