Title :
Transformation of THz spectra emitted from dual-frequency femtosecond pulse interaction in gases
Author :
Andreeva, V.A. ; Borodin, A.V. ; Esaulkov, M.N. ; Kosareva, O.G. ; Luo, Q. ; Panov, N.A. ; Shkurinov, A.P. ; Wang, K. ; Zhao, H. ; Zhang, X.-C.
Author_Institution :
Int. Laser Center, Lomonosov Moscow State Univ., Lomonosov, Russia
Abstract :
Experimental and theoretical study of the mechanisms affecting the spectral form of the pulsed THz emission generated due to the interaction between a bichromatic laser field and a gaseous medium is presented. The influence of a photoionization process and Raman rotational molecular transitions on the THz spectrum is discussed. Typical spectral modifications of THz emission are tracked down and linked to the duration of the two-color laser pump pulse.
Keywords :
millimetre wave lasers; photoionisation; Raman rotational molecular transitions; THz spectra transformation; THz spectrum; bichromatic laser field; dual-frequency femtosecond pulse interaction; gaseous medium; photoionization process; pulsed THz emission; two-color laser pump pulse; Gas lasers; Harmonic analysis; Laser modes; Laser transitions; Photoconductivity; Pump lasers;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380429
