Development of imaging system using heterodyne interferometer with terahertz waves
| Project/Area Number |
19360041
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied physics, general
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
SASAKI Yoshiaki The Institute of Physical and Chemical Research, テラヘルツイメージング研究チーム, 基幹研究所研究員 (90419002)
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| Co-Investigator(Kenkyū-buntansha) |
牧 謙一郎 独立行政法人理化学研究所, テラヘルツイメージング研究チーム, 研究員 (50392121)
保科 宏道 独立行政法人理化学研究所, テラヘルツイメージング研究チーム, 研究員 (10419004)
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| Co-Investigator(Renkei-kenkyūsha) |
MAKI Kenichiro 独立行政法人理化学研究所, テラヘルツイメージング研究チーム, 基幹研究所研究員 (50392121)
HOSHINA Hiromichi 独立行政法人理化学研究所, テラヘルツイメージング研究チーム, 基幹研究所研究員 (10419004)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2007: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
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| Keywords | テラヘルツ / イメージング / ヘテロダイン / CT(Computed Tomography) / トモシンセシス / ヘテロダイ |
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| Research Abstract |
THz imaging techniques to image the internal structure and map the functional state of various targets are promising and desirable diagnostic tools because of their non-invasiveness under adequate incident power of a few mW. The advantages of THz imaging are that THz-wave radiation is non-ionizing and safe, the observed image has submillimeter-scale resolution, and many materials are relatively transparent to THz waves, including paper, plastics, and cardboard. In this research, we propose an imaging system with a heterodyne detection receiver for high sensitivity imaging. For a practical use, we developed a THz CT imaging system using heterodyne detection method. Furthermore, We demonstrated a depth-resolved 3D imaging based on absorption contrast using the tomosynthesis technique, which is similar to computed tomography except that the number of projections is much smaller. We applied the back-projection method suitable for the constructed detection configuration to an image reconstruction. Using the system, we imaged a paper phantom, and reproduced characters written by pencil.
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Report
(4 results)
Research Products
(24 results)
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[Presentation] トモシンセシス法を用いたテラヘルツ断層イメージング2009
Author(s)
佐々木芳彰, 砂口尚輝, 河合美奈, 湯浅哲也, 大谷知行
Organizer
理化学研究所基幹研究所先端光科学研究領域「エクストリームフォトニクス研究, テラヘルツ光研究」研究成果報告会シンポジウム
Place of Presentation
宮城県仙台市仙台国際センター
Year and Date
2009-12-15
Related Report
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