2013 Fiscal Year Final Research Report
Development of laser-beam shaping method for retro-reflector fabrication on surface of metal substrate
| Project/Area Number |
24656095
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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 | Ibaraki University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | ナノ・マイクロ加工 / ビーム整形 / 短パルスレーザ |
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| Research Abstract |
We proposed new laser micro-fabrication process for stainless steel substrate using beam-shaping method to make triangle-shaped beam. Then we confirmed the profiles of the beam. After pulse irradiation to metal surface, formation of two-dimensional micro structures with 2.5 micrometer in pitch were observed. On the other hand micro grooves with 4 micrometer in width and with 0.7 micrometer in depth were fabricated by focused beam irradiation. Although fabrication of retro-reflector on stainless steel substrate could not be achieved, this indicates possibility of the micro-fabrication technology of metal surface using interference pattern of short pulse.
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