Video-rate terahertz electric-field vector imaging

Mayuko Takai, Masatoshi Takeda, Manabu Sasaki, Takehiro Tachizaki, Naoya Yasumatsu, Shinichi Watanabe

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We present an experimental setup to dramatically reduce a measurement time for obtaining spatial distributions of terahertz electric-field (E-field) vectors. The method utilizes the electro-optic sampling, and we use a charge-coupled device to detect a spatial distribution of the probe beam polarization rotation by the E-field-induced Pockels effect in a 〈110〉-oriented ZnTe crystal. A quick rotation of the ZnTe crystal allows analyzing the terahertz E-field direction at each image position, and the terahertz E-field vector mapping at a fixed position of an optical delay line is achieved within 21 ms. Video-rate mapping of terahertz E-field vectors is likely to be useful for achieving real-time sensing of terahertz vector beams, vector vortices, and surface topography. The method is also useful for a fast polarization analysis of terahertz beams.

Original languageEnglish
Article number151103
JournalApplied Physics Letters
Volume105
Issue number15
DOIs
Publication statusPublished - 2014 Oct 13

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electric fields
spatial distribution
delay lines
polarization
electro-optics
crystals
birefringence
charge coupled devices
topography
sampling
time measurement
vortices
probes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Takai, M., Takeda, M., Sasaki, M., Tachizaki, T., Yasumatsu, N., & Watanabe, S. (2014). Video-rate terahertz electric-field vector imaging. Applied Physics Letters, 105(15), [151103]. https://doi.org/10.1063/1.4897996

Video-rate terahertz electric-field vector imaging. / Takai, Mayuko; Takeda, Masatoshi; Sasaki, Manabu; Tachizaki, Takehiro; Yasumatsu, Naoya; Watanabe, Shinichi.

In: Applied Physics Letters, Vol. 105, No. 15, 151103, 13.10.2014.

Research output: Contribution to journalArticle

Takai, M, Takeda, M, Sasaki, M, Tachizaki, T, Yasumatsu, N & Watanabe, S 2014, 'Video-rate terahertz electric-field vector imaging', Applied Physics Letters, vol. 105, no. 15, 151103. https://doi.org/10.1063/1.4897996
Takai M, Takeda M, Sasaki M, Tachizaki T, Yasumatsu N, Watanabe S. Video-rate terahertz electric-field vector imaging. Applied Physics Letters. 2014 Oct 13;105(15). 151103. https://doi.org/10.1063/1.4897996
Takai, Mayuko ; Takeda, Masatoshi ; Sasaki, Manabu ; Tachizaki, Takehiro ; Yasumatsu, Naoya ; Watanabe, Shinichi. / Video-rate terahertz electric-field vector imaging. In: Applied Physics Letters. 2014 ; Vol. 105, No. 15.
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