2010 Fiscal Year Final Research Report
High-aspect-ratio clack-free processing of transparent materials by laser-backside irradiation
| Project/Area Number |
20360065
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
TOKURA Hitoshi Tokyo Institute of Technology, 大学院・理工学研究科, 教授 (10016628)
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| Co-Investigator(Kenkyū-buntansha) |
HIDAI Hirofumi 千葉大学, 大学院・工学研究科, 准教授 (60313334)
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| Project Period (FY) |
2008 – 2010
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| Keywords | レーザ / 透明材料 / 変質 |
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| Research Abstract |
We report on a permanent change in the physical properties inside glasses using a continuous-wave laser beam. Themethod is explained as follows: the absorption of the glass was enhanced by laser heating, and the heated spot moved as a result of thermal radiation and conduction. To trigger heating, an absorbent material was placed on the backside of a glass plate and irradiated through the glass. Etching of the modified zone formed cone shaped structures. The modified zone was bended and curved by changing the direction of the laser beam.
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