[24p-E106-1~18] 3.7 Laser processing

[24p-E106-3] Absorption of dual-color fs laser pulses by a semiconductor

〇Mizuki Tani¹, Kakeru Sasaki¹, Yasushi Shinohara¹, Kenichi L. Ishikawa¹ (1.The Univ. of Tokyo)

Keywords:femtosecond processing, optical absorption

It has been experimentally pointed out that the laser ablation efficiency of gaped material is enhanced when we use dual-color ultrashort laser pulses. We evaluate absorption of dual-color femtosecond laser pulses by a semiconductor based on the time-dependent density functional theory, reveal how different absorption of mixed-color is compared to that of monochromatic one.