2011 Fiscal Year Final Research Report
A novel fabrication technique based on coherent phonon oscillation by using femto pulse train beam
| Project/Area Number |
21656041
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAKAYA Yasuhi 大阪大学, 大学院・工学研究科, 教授 (70243178)
MICHIHATA Masaki 大阪大学, 大学院・工学研究科, 助教 (70588855)
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| Project Period (FY) |
2009 – 2011
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| Keywords | フェムト秒レーザ / コヒーレントフォノン / パルストレインビーム / レーザ加工 |
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| Research Abstract |
When a laser pulse interacts with metal or semiconducting target, the lattice oscillation, which has phase coherence and nonlinear electron heating, is excited on their surfaces. We propose a novel femto pulse nano ablation process with oscillation of the coherent phonon. The pulse train, which is excited by femtosecond pulse, is shaped by using spatial light modulator to control the phase of the passing light. And coherent phonon oscillations are enhanced and decayed due to the controlling the shape of pulse train. It enables to accelerate or decelerate the lattice motion efficiently. We suggest femto pulse shaping and its time resolving detection system to challenge that method.
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Research Products
(2 results)
