[9p-PB2-1~12] 3.7 Laser processing

▲ [9p-PB2-10] X-ray, Terahertz Wave, and Sound Emission from Water Flow Irradiated by Intense Femtosecond Laser Pulses in Air

〇Hsin-hui Huang¹, Takeshi Nagashima², Saulius Juodkazis³, Koji Hatanaka¹ (1.Academia Sinica, 2.Setsunan Univ, 3.Swinburne Univ. of Tech.)

Keywords:Femtosecond laser, Water, Ablation

Intense femtosecond laser-matter interaction results not only in photon emission such as X-ray [1] or terahertz wave (THz) but also in sound/ultrasound emission, which are usually accompanied with macroscopic laser ablation. Mechanisms on such various types of emission indueced by intense laser irradiation to water have not yet been fully uncovered though there may be potential applications from basic science to advanced one. This presentation demonstrated simultaneous detection of X-ray, THz, and sound emission from water flow irradiated by focused femtosecond laser pulses in air and we will try the discussion on the intense laser- matter interaction especially from the viewpoint of laser ablation.