INTERNAL PROCESSING OF LIGHT ABSORPTION MEDIUM BY USE OF SELF-FOCUS INDUCED BY ULTRASHORT PULSE LASER AND ANALYSIS OF PROCESSING PHENOMENA

超短脉冲激光自聚焦对吸光介质的内部加工及加工现象分析

• 批准号: 23246029
• 负责人: OHMURA ETSUJI
• 金额: $ 3.83万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-11-18 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23246029/
• 关键词: 超短パルスレーザ; 光吸収性媒質; 内部加工; 溶接; 非線形光学; 自己集束

The beam diameter, the beam profile and the transmittance of an ultrashort pulse laser propagating in a transparent medium were measured. The optical analysis was performed by considering the beam propagation, the self-focusing and the nonlinear absorption of ultrashort pulse laser in a Kerr medium. Comparing with the experimental results, the nonlinear absorption coefficients of BK7 and fused silica were calculated. Furthermore, the internal processing and the lap welding of glass were conducted with an ultrashort pulse laser. Using the measurement results of the absorption ratio in the inside of glass, heat conduction analysis was carried out, and the processing mechanism was discussed.

测量了超短脉冲激光在透明介质中传输的光束直径、光束轮廓和透过率。 考虑了超短脉冲激光在克尔介质中的传输、自聚焦和非线性吸收，对超短脉冲激光在克尔介质中的传输特性进行了光学分析。 并与实验结果进行了比较，计算了BK 7和熔融石英的非线性吸收系数。 此外，还利用超短脉冲激光对玻璃进行了内部加工和搭焊。 利用玻璃内部吸收率的测量结果，进行了热传导分析，并对加工机理进行了探讨。

项目成果

Analysis of internal processing phenomena of glass by repetitive irradiation of ultrashort pulse laser

超短脉冲激光重复照射玻璃内部加工现象分析

• 发表时间: 2013
• 期刊: On-line Proceedings of the 6th International Congress on Laser Advanced Materials Processing (LAMP2013)
• 作者: Kenji Fukuzawa;Qingqing Liu;Takumi Tarukado;Yosuke Kajihara;Ryota Watanabe;Shintaro Itoh;Hedong Zhang;宝珍 善伸;T.Murakami and E.Ohmura
• 通讯作者: T.Murakami and E.Ohmura

Analyses of self-focusing phenomenon and temperature rise in light absorption medium by ultrashort pulse laser irradiation

超短脉冲激光照射光吸收介质自聚焦现象及温升分析

• 发表时间: 2013
• 期刊: Materials Science and Engineering Technology
• 作者: Yosuke Kajihara;Kenji Fukuzawa;Shintaro Itoh;Ryota Watanabe;Hedong Zhang;加々良 剛志;Etsuji Ohmura
• 通讯作者: Etsuji Ohmura

ガラスのレーザスクライブにおける境界要素法を用いた亀裂進展解析

玻璃激光划片中边界元法裂纹扩展分析

• 发表时间: 2013
• 作者: Akio Ishii;Ju Li and Shigenobu Ogata;Yuzo Kitazawa;J. Matsuo;加地史弥，堀田陽亮，高橋 哲，高増 潔;八幡恵輔・清水政二・村上正直・大村悦二
• 通讯作者: 八幡恵輔・清水政二・村上正直・大村悦二

Suitable Processing Conditions Determined from the Standpoint of Residual Strain in Laser Scribing of Glass

从玻璃激光划片残余应变的角度确定合适的加工条件

• 发表时间: 2012
• 期刊: Proceedings of the 31st International Congress on Application of Laser and Electro-Optics (ICALEO2012)
• 作者: Keisuke Yahata;Etsuji Ohmura;Seiji Shimizu and Masanao Murakami
• 通讯作者: Seiji Shimizu and Masanao Murakami

Analyses of Self-Focusing Phenomenon and Temperature Rise in Fused Silica by Ultrashort Pulse Laser Irradiation

超短脉冲激光辐照熔融石英自聚焦现象及温升分析

• DOI: 10.1016/j.procir.2013.01.002
• 发表时间: 2013
• 期刊: Procedia CIRP
• 作者: Kenji Fukuzawa;Qingqing Liu;Takumi Tarukado;Yosuke Kajihara;Ryota Watanabe;Shintaro Itoh;Hedong Zhang;T. Seki;Etsuji Ohmura
• 通讯作者: Etsuji Ohmura