Near-field scanning optical microscope : construction and test = 근접장 주사 광학 현미경 : 제작 및 성능분석construction and test

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Near-field scanning optical microscope(NSOM) was constructed and tested by the measurement of the near-field mode of vertical cavity surface emitting lasers(VCSELs). The NSOM consists of an optical fiber tip extended to a photomultiplier tube, a two-dimensional motor-driven micrometer stage, a vertical piezoelectric translator for tip approach, a data acquisition card, and its operating program. Three kinds of technique such as chemical etching, cold-deformation, and sidewall coating were tried for the suitable aperture at the apex of the tip. To test the feasibility of the NSOM, a microscopic pattern and VCSELs were scanned with the fabricated tip. Obtained images show better resolution in comparison with those of CCD camera with a 20× microscope objective lens. Additionally, several interesting unknown behaviors of VCSELs below and near the threshold were found. The NSOM can be enhanced further by improving a tip and employing the mechanism to control the tip-sample distance such as a shear-force feedback.
Advisors
Lee, Yong-Heeresearcher이용희researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
1997
Identifier
112625/325007 / 000953304
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 1997.2, [ [ii], 47 p. ]

Keywords

VCSEL; NSOM; Near-field; 근접장; 수직공진 표면광 레이저; 근접장 주사 광학 현미경

URI
http://hdl.handle.net/10203/48424
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=112625&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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