Because the efficiency of THz generation in air plasma is quite low, the residual power of input beam after THz radiation is generated in air plasma remains almost the same. A new method, multiple air plasmas, is proposed. The residual power can be used to induce other air plasmas and generate THz radiation again. The multiple air plasmas method provides a potential way for the development of the intense THz source. The preliminary experimental results confirm the theoretical prediction. The multiple air plasmas generated THz can be very useful for remote THz generation and standoff detection.

Date Published: 2 September 2008
PDF: 5 pages
Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70561A (2 September 2008); doi: 10.1117/12.794040

Published in SPIE Proceedings Vol. 7056:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II
Shizhuo Yin; Ruyan Guo, Editor(s)