2012 Fiscal Year Final Research Report
Exciton Polarization in Semiconductor Quantum Dots studied byTip-Enhancement and Coherent Control Methods
| Project/Area Number |
22340077
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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 |
Condensed matter physics I
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
MINAMI Fujio 東京工業大学, 大学院・理工学研究科, 教授 (30200083)
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| Co-Investigator(Kenkyū-buntansha) |
OGAWA Yoshihiro 東京工業大学, 理工学研究科, 助教 (50372462)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 光物性 |
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| Research Abstract |
We studied the luminescence processes of various semiconductor super-structures by using tip-enhanced effects.Tip-enhanced Raman scattering measurements were performed on a single Ge nano-wire. We observed the phonon confinement effect and estimated the Ge amorphous shell thickness.We performed the coherent control experiments on GaAs quantum dots. It is shown that the power-broadening process of excitons is controlled by the delay time of phase-locked pulses.
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