Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 82, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3553397
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- Deutsche Telekom AG
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The combination of an all-optical terahertz source with a photoconductive antenna to achieve coherent detection is presented. This approach aims to overcome the frequency limits introduced by optoelectronic terahertz sources commonly used. Here the Gaussian-shaped and linearly polarized terahertz waves are generated by a continuous wave optical parametric oscillator with a power of 3 mu W at 1.4 THz. The infrared signal light of the optical parametric oscillator can be used to coherently detect the generated terahertz wave with a photoconductive antenna. As a proof-of-principle experiment we determine the thickness profile of a plastic lens using phase shifting interferometry. (C) 2011 American Institute of Physics. [doi:10.1063/1.3553397]
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