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

fYear

2012

fDate

23-28 Sept. 2012

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on

Conference_Location

Wollongong, NSW

ISSN

2162-2027

Print_ISBN

978-1-4673-1598-2

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/IRMMW-THz.2012.6380429

Filename

6380429