Video-rate terahertz electric-field vector imaging
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.
- Authors:
-
- Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522 (Japan)
- Publication Date:
- OSTI Identifier:
- 22350878
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAMS; CHARGE-COUPLED DEVICES; CRYSTALS; ELECTRIC FIELDS; POLARIZATION; ROTATION; SAMPLING; SPATIAL DISTRIBUTION; SURFACES; THZ RANGE; VORTICES; ZINC TELLURIDES
Citation Formats
Takai, Mayuko, Takeda, Masatoshi, Sasaki, Manabu, Tachizaki, Takehiro, Yasumatsu, Naoya, and Watanabe, Shinichi. Video-rate terahertz electric-field vector imaging. United States: N. p., 2014.
Web. doi:10.1063/1.4897996.
Takai, Mayuko, Takeda, Masatoshi, Sasaki, Manabu, Tachizaki, Takehiro, Yasumatsu, Naoya, & Watanabe, Shinichi. Video-rate terahertz electric-field vector imaging. United States. https://doi.org/10.1063/1.4897996
Takai, Mayuko, Takeda, Masatoshi, Sasaki, Manabu, Tachizaki, Takehiro, Yasumatsu, Naoya, and Watanabe, Shinichi. 2014.
"Video-rate terahertz electric-field vector imaging". United States. https://doi.org/10.1063/1.4897996.
@article{osti_22350878,
title = {Video-rate terahertz electric-field vector imaging},
author = {Takai, Mayuko and Takeda, Masatoshi and Sasaki, Manabu and Tachizaki, Takehiro and Yasumatsu, Naoya and Watanabe, Shinichi},
abstractNote = {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.},
doi = {10.1063/1.4897996},
url = {https://www.osti.gov/biblio/22350878},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 15,
volume = 105,
place = {United States},
year = {Mon Oct 13 00:00:00 EDT 2014},
month = {Mon Oct 13 00:00:00 EDT 2014}
}