2013 Fiscal Year Final Research Report
Realization of Random Laser Chip Using ZnO Nano-Sheet
| Project/Area Number |
24656053
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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 |
Applied optics/Quantum optical engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
OKADA TATSUO 九州大学, システム情報科学研究科(研究院, 教授 (90127994)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | ランダムレーザー / ナノシート / ZnO / レーザ加工 / イオンビーム加工 |
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| Research Abstract |
The fabrication method of the ZnO nanosheets has been established, where the ZnO nanowalls are synthesized by nanoparticles-assisted pulsed laser deposition and then the nanowalls are lifted off by laser irradiation form a substrate. Nano-structuring of on the nanosheets has been achieved by Ga ion beam and laser processing using silica micro lens. It is also proposed that an irregular-shaped ZnO nanosheet acts as a random laser chip. Based on this idea, the random lasing in a single irregular-shaped ZnO nanosheet with a low threshold power of 150 kW/cm2 is successfully demonstrated.
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