Development of laser picosecond ultrasonic microscopy with micro ultrasonic lens
| Project/Area Number |
25390114
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General applied physics
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| Research Institution | Hokkaido University |
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Principal Investigator |
Tomoda Motonobu 北海道大学, 工学(系)研究科(研究院), 助教 (30344485)
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| Co-Investigator(Kenkyū-buntansha) |
WRIGHT Oliver B. 北海道大学, 大学院工学研究院, 教授 (90281790)
MATSUDA Osamu 北海道大学, 大学院工学研究院, 准教授 (30239024)
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| Research Collaborator |
Otsuka Paul 北海道大学, 大学院工学研究院, 研究員
Mezil Sylvain 北海道大学, 大学院工学研究院, 研究員
Juodkazis Saulius Swinburne University of Technology, 教授
Ulbricht Ronald University of Colorado, 研究員
Gusev Vitali Maine University, 教授
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 音 / 顕微鏡 / イメージング / ピコ秒超音波 / ポンプ・プローブ分光 |
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| Outline of Final Research Achievements |
We developed ultrasonic microscopy techniques with high frequencies and high resolutions, aiming to measure and image surface topographies and three-dimensional internal structures of samples. This technique is based on laser picosecond ultrasonics which generate and detect ultrasonic pulses at 10-100 GHz.
We did ultrasonic focusing with micro-structures like a micro-ultrasonic-lens and a micro-fiber, making a smaller probe light spot by use of a high numerical aperture oil-immersion objective lens, high resolution depth-profile ultrasonic measurements in transparent samples, development of arbitrary frequency measurements which are not restricted to repetition pulse laser frequencies, and controlling of pump beam spot shapes.
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Report
(4 results)
Research Products
(25 results)
