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Proceedings Paper

Advances in continuous-wave THz generation
Author(s): Karsten Siebert; Frank Siebe; Mark Thomson; Jalil Zare Baghbidi; Rainer Leonhardt; Hartmut G. Roskos
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Paper Abstract

We introduce tow modifications of the technology of optoelectronic continuous-wave THz spectroscopy. The first relates to the optoelectronic generation of cw THz radiation by heterodyne down conversion of two leaser beam. We present a cw Ti:Sapphire laser with a simultaneous output at two independently tunable colors which are used for the mixing process. Two alternative cavity designs, a linear (alpha) - shaped cavity and a ring cavity, have been realized. A comparison with respect to tunability, bandwidth, stability and experimental handling will be given. The second improvement relates to the detection of cw THz radiation. We discuss detection schemes which are based on the electro- optic effect in nonlinear media and employ the concept of quasi-phase matching for the enhancement of the sensitivity.

Paper Details

Date Published: 9 September 1999
PDF: 10 pages
Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); doi: 10.1117/12.361040
Show Author Affiliations
Karsten Siebert, Univ. Frankfurt (Germany)
Frank Siebe, Univ. Frankfurt (Germany)
Mark Thomson, Univ. Frankfurt (Germany)
Jalil Zare Baghbidi, Univ. Frankfurt (Germany)
Rainer Leonhardt, Univ. Frankfurt (Germany)
Hartmut G. Roskos, Univ. Frankfurt (Germany)

Published in SPIE Proceedings Vol. 3828:
Terahertz Spectroscopy and Applications II
J. Martyn Chamberlain, Editor(s)

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