Optical Heterodyne Measurement of Terahertz Wave
One of the most notable frequency regions in terms of research currently lies in the ‘frequency gap’ region between microwaves and infrared: terahertz wave. Although new methods for generating and detecting terahertz wave have been developed, few detectors operating at room temperature are able to c...
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| Autores principales: | , |
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| Formato: | Capítulo de libro |
| Lenguaje: | inglés |
| Publicado: |
IntechOpen
2021
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| Materias: | |
| Acceso en línea: | https://www.intechopen.com/chapters/77821 |
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| _version_ | 1879164730369638400 |
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| author | Hayashi, Shin’ichiro Sekine, Norihiko |
| author_browse | Hayashi, Shin’ichiro Sekine, Norihiko |
| author_facet | Hayashi, Shin’ichiro Sekine, Norihiko |
| author_sort | Hayashi, Shin’ichiro |
| building | IntechOpen |
| collection | Acceso abierto |
| description | One of the most notable frequency regions in terms of research currently lies in the ‘frequency gap’ region between microwaves and infrared: terahertz wave. Although new methods for generating and detecting terahertz wave have been developed, few detectors operating at room temperature are able to capture low-energy terahertz beams. Here we introduce the optical heterodyne measurement (nonlinear frequency up-conversion detection) of terahertz wave using parametric wavelength conversion in a nonlinear crystal; this has better sensitivity than many commonly used thermal detectors such as pyroelectric detectors. Additionally, optical heterodyne techniques allow the beams of terahertz wave to be visualized and their frequency and intensity determined directly as visible light. These are very promising for extending applied researches into the terahertz region, and we expect that these will open new research fields such as wireless information communications or non-destructive inspection in the terahertz region. |
| doi_str_mv | 10.5772/intechopen.99168 |
| first_indexed | 2026-10-15T21:38:59Z |
| format | Book Chapter |
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<dc:title>Optical Heterodyne Measurement of Terahertz Wave</dc:title>
<dc:creator>Shin’ichiro Hayashi</dc:creator>
<dc:creator>Norihiko Sekine</dc:creator>
<dc:subject>Physical Sciences, Engineering and Technology</dc:subject>
<dc:description>One of the most notable frequency regions in terms of research currently lies in the ‘frequency gap’ region between microwaves and infrared: terahertz wave. Although new methods for generating and detecting terahertz wave have been developed, few detectors operating at room temperature are able to capture low-energy terahertz beams. Here we introduce the optical heterodyne measurement (nonlinear frequency up-conversion detection) of terahertz wave using parametric wavelength conversion in a nonlinear crystal; this has better sensitivity than many commonly used thermal detectors such as pyroelectric detectors. Additionally, optical heterodyne techniques allow the beams of terahertz wave to be visualized and their frequency and intensity determined directly as visible light. These are very promising for extending applied researches into the terahertz region, and we expect that these will open new research fields such as wireless information communications or non-destructive inspection in the terahertz region.</dc:description>
<dc:publisher>IntechOpen</dc:publisher>
<dc:date>2021-08-03</dc:date>
<dc:type>Chapter, Part Of Book</dc:type>
<dc:identifier>https://www.intechopen.com/chapters/77821</dc:identifier>
<dc:identifier>doi:10.5772/intechopen.99168</dc:identifier>
<dc:language>en</dc:language>
<dc:relation>ISBN:978-1-83962-612-8</dc:relation>
<dc:rights>https://creativecommons.org/licenses/by/3.0/</dc:rights>
<dc:source>https://www.intechopen.com/books/10206 ; Terahertz Technology</dc:source>
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| id | intech-77821 |
| institution | IntechOpen |
| isbn | 978-1-83962-612-8 |
| language | English |
| last_indexed | 2026-10-15T21:38:59Z |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | IntechOpen |
| publisherStr | IntechOpen |
| record_format | oai_dc |
| spelling | intech-778212021-08-03 Optical Heterodyne Measurement of Terahertz Wave Shin’ichiro Hayashi Norihiko Sekine Physical Sciences, Engineering and Technology One of the most notable frequency regions in terms of research currently lies in the ‘frequency gap’ region between microwaves and infrared: terahertz wave. Although new methods for generating and detecting terahertz wave have been developed, few detectors operating at room temperature are able to capture low-energy terahertz beams. Here we introduce the optical heterodyne measurement (nonlinear frequency up-conversion detection) of terahertz wave using parametric wavelength conversion in a nonlinear crystal; this has better sensitivity than many commonly used thermal detectors such as pyroelectric detectors. Additionally, optical heterodyne techniques allow the beams of terahertz wave to be visualized and their frequency and intensity determined directly as visible light. These are very promising for extending applied researches into the terahertz region, and we expect that these will open new research fields such as wireless information communications or non-destructive inspection in the terahertz region. IntechOpen 2021-08-03 Chapter, Part Of Book https://www.intechopen.com/chapters/77821 doi:10.5772/intechopen.99168 en ISBN:978-1-83962-612-8 https://creativecommons.org/licenses/by/3.0/ https://www.intechopen.com/books/10206 ; Terahertz Technology |
| spellingShingle | Physical Sciences, Engineering and Technology Hayashi, Shin’ichiro Sekine, Norihiko Optical Heterodyne Measurement of Terahertz Wave |
| title | Optical Heterodyne Measurement of Terahertz Wave |
| title_full | Optical Heterodyne Measurement of Terahertz Wave |
| title_fullStr | Optical Heterodyne Measurement of Terahertz Wave |
| title_full_unstemmed | Optical Heterodyne Measurement of Terahertz Wave |
| title_short | Optical Heterodyne Measurement of Terahertz Wave |
| title_sort | optical heterodyne measurement of terahertz wave |
| topic | Physical Sciences, Engineering and Technology |
| url | https://www.intechopen.com/chapters/77821 |
| work_keys_str_mv | AT hayashishinichiro opticalheterodynemeasurementofterahertzwave AT sekinenorihiko opticalheterodynemeasurementofterahertzwave |