ENGLISH

Much attension has been paid to ultrashort pulsed laser (i.e., femtosecond laser) processing of various materials. The important feature of ultrafast laser processing is that it reduces heat diffusion to surrounding regions of the processed areas, resulting in high-quality micro/nanofabrication of the materials. Another important aspect of ultrashort laser processing is nonlinear absorption (i.e., multiphoton absorption) that can induce strong absorption even inside transparent materials, resulting in 3D fabrication of the materials. Furthermore, the laser exceeds the diffraction limit to create laser-induecd periodc structures in nanoscale.

Considering these attractive features of femtosecond laser processing, in our lab., we investigate laser processing of various materials by not only the femtosecond laser, but also conventional lasers.