Combless broadband terahertz generation with conventional laser diodes

doi:10.1364/OE.19.005290

Combless broadband terahertz generation with conventional laser diodes

D. Molter, A. Wagner, S. Weber, J. Jonuscheit, and R. Beigang »View Author Affiliations

Optics Express, Vol. 19, Issue 6, pp. 5290-5296 (2011)
http://dx.doi.org/10.1364/OE.19.005290

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Abstract
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Abstract

We present a novel technique to generate a continuous, combless broadband Terahertz spectrum with conventional low-cost laser diodes. A standard time-domain spectroscopy system using photoconductive antennas is pumped by the output of two tunable diode lasers. Using fine tuning for one laser and fine and coarse tuning for the second laser, difference frequency generation results in a continuous broadband THz spectrum. Fast coarse-tuning is achieved by a simple spatial light modulator introduced in an external cavity. The results are compared to multi-mode operation for THz generation.

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: January 26, 2011
Revised Manuscript: February 22, 2011
Manuscript Accepted: February 25, 2011
Published: March 7, 2011

Citation
D. Molter, A. Wagner, S. Weber, J. Jonuscheit, and R. Beigang, "Combless broadband terahertz generation with conventional laser diodes," Opt. Express 19, 5290-5296 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-6-5290

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References

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