Title :
Ablation of organic crystals using picosecond THz free electron laser pulses
Author :
Nagai, Masaharu ; Matsubara, Eiichi ; Ashida, M. ; Kawase, Kanta ; Irizawa, Akinori ; Kato, Ryota ; Isoyama, Goro
Author_Institution :
Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka, Japan
Abstract :
We report the ablation of an organic crystal using THz free electron laser (FEL) at the Institute of Scientific and Industrial Research (ISIR), Osaka university. Under the irradiation of FEL resonant for the intermolecular vibrational mode, aerosol is created from the surface of the sucrose crystal. The ablation occurs at the adequate power density without the green luminescence which indicates chemical dissociation. Our results open a new venue for the nonthermal control of materials with intense picosecond pulses.
Keywords :
aerosols; dissociation; free electron lasers; high-speed optical techniques; laser ablation; vibrational modes; FEL resonant; ISIR; Institute of Scientific and Industrial Research; Osaka university; aerosol; chemical dissociation; intense picosecond pulses; intermolecular vibrational mode; nonthermal control; organic crystal ablation; picosecond THz free electron laser pulses; power density; sucrose crystal; Crystals; Educational institutions; Free electron lasers; Green products; Radiation effects; Sugar; Vibrations;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956352
