2012 Fiscal Year Final Research Report
Generation of large coherent phonon amplitude via coherent controlof electron system
| Project/Area Number |
22540334
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Sophia University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | コヒーレントフォノン / 光物性 |
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| Research Abstract |
As steps to realize coherent phonon softening originated only fromlattice anharmonicity,We performed mainly two experiments below.First, by a pulse train excitation, we observed large amplitude of coherent phonon withsuppressing multi-photon absorption. This suggests a possibility of phonon softeningkeeping low temperature electron system.In addition, we observed coherent phonon oscillations in CdSe quantum dots which can beregarded as a two-level system
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