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Nonorthodox heterodyne electro-optic detection for terahertz optical systems
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10.1063/1.3567754
/content/aip/journal/apl/98/16/10.1063/1.3567754
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/16/10.1063/1.3567754
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic drawing of the detection principle for THz radiation by the EO sensor with a LO.

Image of FIG. 2.
FIG. 2.

Schematic drawing of the THz time-domain setup used for the testing the heterodyning EO detector (QWP––quarter wave plate; WP––Wollaston prism; THz BS––silicon wafer beam splitter; and EOS––GaP EO sensor). For the sake of simplicity, the depicted beam guiding does not correspond to the real setup and the optical delay line in the THz beam path is omitted, too.

Image of FIG. 3.
FIG. 3.

Detected waveforms of the THz pulse reflected from the gold plane mirror placed in the THz beam waist (top panel), THz pulse reflected from the ordinary cardboard and the LO was off (middle panel), and the same reflected THz pulse when the LO was on (bottom panel). The LO electric field was about 50, 150, 450, and 1200 V/cm (LO1––LO4).

Image of FIG. 4.
FIG. 4.

Spectral density of the THz pulses shown in Fig. 3 normalized with respect the reference.

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/content/aip/journal/apl/98/16/10.1063/1.3567754
2011-04-22
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nonorthodox heterodyne electro-optic detection for terahertz optical systems
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/16/10.1063/1.3567754
10.1063/1.3567754
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