Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source
We demonstrate spectroscopic imaging using a compact ultra-broadband terahertz semiconductor source with a high-power, mid-infrared quantum cascade laser. The electrically pumped monolithic source is based on intra-cavity difference-frequency generation and can be designed to achieve an ultra-broadb...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
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| Series: | Electronics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-9292/10/3/336 |
| _version_ | 1797416879155838976 |
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| author | Atsushi Nakanishi Shohei Hayashi Hiroshi Satozono Kazuue Fujita |
| author_facet | Atsushi Nakanishi Shohei Hayashi Hiroshi Satozono Kazuue Fujita |
| author_sort | Atsushi Nakanishi |
| collection | DOAJ |
| description | We demonstrate spectroscopic imaging using a compact ultra-broadband terahertz semiconductor source with a high-power, mid-infrared quantum cascade laser. The electrically pumped monolithic source is based on intra-cavity difference-frequency generation and can be designed to achieve an ultra-broadband multi-mode terahertz emission spectrum extending from 1–4 THz without any external optical setup. Spectroscopic imaging was performed with three frequency bands, 2.0 THz, 2.5 THz and 3.0 THz, and as a result, this imaging technique clearly identified three different tablet components (polyethylene, D-histidine and DL-histidine). This method may be highly suitable for quality monitoring of pharmaceutical materials. |
| first_indexed | 2024-03-09T06:10:39Z |
| format | Article |
| id | doaj.art-933c780052e445c9ac9177d7d26ffc84 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T06:10:39Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-933c780052e445c9ac9177d7d26ffc842023-12-03T11:59:08ZengMDPI AGElectronics2079-92922021-02-0110333610.3390/electronics10030336Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation SourceAtsushi Nakanishi0Shohei Hayashi1Hiroshi Satozono2Kazuue Fujita3Central Research Laboratory, Hamamatsu Photonics K. K., Shizuoka 434-8601, JapanCentral Research Laboratory, Hamamatsu Photonics K. K., Shizuoka 434-8601, JapanCentral Research Laboratory, Hamamatsu Photonics K. K., Shizuoka 434-8601, JapanCentral Research Laboratory, Hamamatsu Photonics K. K., Shizuoka 434-8601, JapanWe demonstrate spectroscopic imaging using a compact ultra-broadband terahertz semiconductor source with a high-power, mid-infrared quantum cascade laser. The electrically pumped monolithic source is based on intra-cavity difference-frequency generation and can be designed to achieve an ultra-broadband multi-mode terahertz emission spectrum extending from 1–4 THz without any external optical setup. Spectroscopic imaging was performed with three frequency bands, 2.0 THz, 2.5 THz and 3.0 THz, and as a result, this imaging technique clearly identified three different tablet components (polyethylene, D-histidine and DL-histidine). This method may be highly suitable for quality monitoring of pharmaceutical materials.https://www.mdpi.com/2079-9292/10/3/336terahertzterahertz sourcenonlinear opticsimagingdifference-frequency generation |
| spellingShingle | Atsushi Nakanishi Shohei Hayashi Hiroshi Satozono Kazuue Fujita Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source Electronics terahertz terahertz source nonlinear optics imaging difference-frequency generation |
| title | Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source |
| title_full | Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source |
| title_fullStr | Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source |
| title_full_unstemmed | Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source |
| title_short | Spectroscopic Imaging with an Ultra-Broadband (1–4 THz) Compact Terahertz Difference-Frequency Generation Source |
| title_sort | spectroscopic imaging with an ultra broadband 1 4 thz compact terahertz difference frequency generation source |
| topic | terahertz terahertz source nonlinear optics imaging difference-frequency generation |
| url | https://www.mdpi.com/2079-9292/10/3/336 |
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