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Proceedings Paper

Intracavity generation of continuous wave terahertz radiation
Author(s): M. Scheller; A. Young; J. M. Yarborough; J. V. Moloney; S. W. Koch; C. Y. Drouet d'Aubigny; C. Walker
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Paper Abstract

We present a terahertz source based on difference frequency generation within a laser cavity. Combining the high intracavity intensities of a dual-color vertical external cavity surface emitting laser (VECSEL) with the high nonlinear coefficient of a periodically poled lithium niobate crystal enables the generation of milliwatts of continuous wave terahertz radiation. As the frequency spacing between the two simultaneously oscillating laser lines can be adjusted freely, the entire range of the terahertz gap can be covered. We discuss different approaches for the wavelength control of the dual-color laser sources as well as emission characteristics of the nonlinear crystal. Exemplarily, we chose the frequencies 1.9 THz to characterize the source in term of the beam shape, the linewidth and power scalability. To investigate the emitted THz spectrum, heterodyne detection is employed.

Paper Details

Date Published: 15 February 2012
PDF: 8 pages
Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 824007 (15 February 2012); doi: 10.1117/12.911943
Show Author Affiliations
M. Scheller, Desert Beam Technologies LLC (United States)
College of Optical Sciences, The Univ. of Arizona (United States)
A. Young, The Univ. of Arizona (United States)
Philipps-Univ. Marburg (Germany)
J. M. Yarborough, Desert Beam Technologies LLC (United States)
College of Optical Sciences, The Univ. of Arizona (United States)
J. V. Moloney, Desert Beam Technologies LLC (United States)
College of Optical Sciences, The Univ. of Arizona (United States)
S. W. Koch, Desert Beam Technologies LLC (United States)
Philipps-Univ. Marburg (Germany)
C. Y. Drouet d'Aubigny, The Univ. of Arizona (United States)
TeraVision Inc. (United States)
C. Walker, The Univ. of Arizona (United States)
TeraVision Inc. (United States)


Published in SPIE Proceedings Vol. 8240:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI
Konstantin L. Vodopyanov, Editor(s)

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