2002 Fiscal Year Final Research Report Summary
Study of light-induced excitation dynamics in semiconductor nanostructures using ultrafast imaging microspectroscopy
| Project/Area Number |
13440095
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体物性Ⅰ(光物性・半導体・誘電体)
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| Research Institution | Osaka University |
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Principal Investigator |
EDAMATSU Keiichi Graduate School of Engineering Science, Associate Professor, 基礎工学研究科, 助教授 (10193997)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Tadashi Graduate School of Engineering Science, Professor, 基礎工学研究科, 教授 (60004503)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Nanocrystl / Quantum dot / Semiconductor nanostructure / Microspectroscopy / Ultrafast spectroscopy / Nonlinear spectroscopy |
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| Research Abstract |
(1) Development of the ultrafast imaging microspectroscopy system
We have developed the system for optical investigation of light-induced dynamics in semiconductor nanostructures. The system is composed of an imaging microscope and a timeresolving laser facility based on optical parametric amplifiers. The microscope has active-feedback-controlled translation stages, establishing high spatial resolution (~ 1?m) and long-term stability. The timefesolving optical system has a picosecond temporal response (~ 2ps) using optical Kerr shutter technique with CS_2 as a Kerr medium.
(2) Optical investigation of semiconductor nanostructures
We have investigated the optical properties of various semiconductor nanostructures as follows.
・ Multiexciton states and extraordinary anti-Stokes luminescence of GaAs/AlGaAs quantum dots.
・ Transient excited-state absorption of excitons and biexcitons confined in CuCl quantum dots.
・ MBE growth of CuCl thin fikns/nanostructures and their optical properties.
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