2010 Fiscal Year Final Research Report
Frequency counter based on teraheltz standard frequency comb
| Project/Area Number |
20560036
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Osaka University |
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Principal Investigator |
YOKOYAMA Shuko Osaka University, 大学院・基礎工学研究科, 特任研究員 (30437363)
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| Co-Investigator(Kenkyū-buntansha) |
YASUI Takeshi 徳島大学, 大学院・ソシオテクノサイエンス研究部, 教授 (70314408)
ARAKI Tsutomu 大阪大学, 大学院・基礎工学研究科, 教授 (50136214)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 光計測 / テラヘルツ / 光周波数コム / 周波数標準 / ファイバーレーザー |
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| Research Abstract |
We have developed a high-accuracy and high-resolution teraheltz(THz) electromagnetic wave frequency counter based on THz standard frequency comb, which consists of many accurate frequency lines extending from microwave region to THz region, utilizing our previously developed "multifrequency heterodyning photoconductive detection". The system adopted a fiber laser as a light source to be small-size, stable and robust instrument for a practical use. Measurement precision of 2.4*10^<-1>, bandwidth of 1THz and minimum power limitation of a few hundreds of nanowatt have been achieved.
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Research Products
(10 results)
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[Journal Article] Absolute distance measurement of optically rough objects using asynchronous-optical-sampling terahertz impulse ranging Applied Optics 49 5262-5270 2010 有T.Yasui, M.Nose, A.Ihara, K.Kawamoto, S.Yokoyama, H.Inaba, K.Minoshima, T.Araki Fiber-based, hybrid terahertz spectrometer using dual fiber combs Optics Letters 35 1689-1691 2010 有T.Yasui, H.Takahashi, Y.Iwamoto, H.Inaba, K.Minoshima Continuously tunable, phase-locked, continuous-wave terahertz generator based on photomixing of two continuous-wave lasers locked to two independent optical combs Journal of Applied Physics 107 033111 2010 有T.Yasui, R.Nakamura, K.Kawamoto, A.Ihara, Y.Fujimoto, S.Yokoyama, H.Inaba, K.Minoshima, T.Nagatsuma, T.Araki Real-time monitoring of continuous-wave terahertz radiation using a fiber-based, terahertz-comb-referenced spectrum analyzer2009
Author(s)
T.Yasui, Y.Kabetani, Y.Ohgi, S.Yokoyama, T.Araki
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Journal Title
Optics Express 17
Pages: 17034-17043
Peer Reviewed
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