Power dependent measurements of the emission bandwidth of a vertical-external-cavity surface-emitting laser driven terahertz source

Author

Wichmann, Matthias ; Moller, Christoph ; Stein, Manuel ; Rahimi-Iman, A. ; Koch, S.W. ; Stolz, Wolfgang ; Koch, Martin

Author_Institution

Dept. of Phys., Mater. Sci. Center, Marburg, Germany

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

We investigate the pump-power dependent emission bandwidth of a CW THz emitter which is based on intra-cavity difference frequency generation in a two-color vertical-external-cavity surface-emitting laser. Two Michelson interferometers are employed to investigate the two color laser output and the originating CW THz signal, respectively. This allows a study of the optical modes which contribute to the THz signal. We find that the THz emission bandwidth is strongly depending on the pump power and shows a clear correlation with the number of involved optical modes.

Keywords

Michelson interferometers; optical frequency conversion; optical pumping; surface emitting lasers; terahertz wave generation; Michelson interferometers; intracavity difference frequency generation; power dependent measurement; pump-power dependent emission bandwidth; terahertz emitter; vertical external cavity surface emitting laser; Bandwidth; Image color analysis; Nonlinear optics; Optical interferometry; Optical pumping; Stimulated emission; Vertical cavity surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956476

Filename

6956476