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 language | English |
|---|---|
| Article number | 151103 |
| Journal | Applied Physics Letters |
| Volume | 105 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2014 Oct 13 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
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 journal › Article
}
TY - JOUR
T1 - Video-rate terahertz electric-field vector imaging
AU - Takai, Mayuko
AU - Takeda, Masatoshi
AU - Sasaki, Manabu
AU - Tachizaki, Takehiro
AU - Yasumatsu, Naoya
AU - Watanabe, Shinichi
PY - 2014/10/13
Y1 - 2014/10/13
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84907984752&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907984752&partnerID=8YFLogxK
U2 - 10.1063/1.4897996
DO - 10.1063/1.4897996
M3 - Article
AN - SCOPUS:84907984752
VL - 105
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 15
M1 - 151103
ER -