Fine 3D control of THz emission in air with dual femtosecond laser pre-pulses at tunnelling ionisation regime

• Published in: Light: advanced manufacturing Vol. 5; no. 3; pp. 1 - 13
• Main Authors: Huang, Hsin-Hui, Nagashima, Takeshi, Kumagai, Kota, Hayasaki, Yoshio, Juodkazis, Saulius, Tikhonchuk, Vladimir T., Hatanaka, Koji
• Format: Journal Article
• Language: English
• Published: Light Publishing Group 01.05.2024
• Subjects: air breakdown, spatio-temporal control; femtosecond laser induced breakdown; thz radiation

Emission of THz radiation from air breakdown at focused ultra-short fs-laser pulses (800 nm/35 fs) was investigated for the 3D spatio-temporal control where two pre-pulses are used before the main-pulse. The laser pulse induced air breakdown forms a ~ 120 μm-long focal volume generate shockwaves whi...