Spectrograph based on frequency-variable multi-GHz-comb
| Project/Area Number |
26286057
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
Kurokawa Takashi 東京農工大学, 工学(系)研究科(研究院), 名誉教授 (40302913)
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| Co-Investigator(Kenkyū-buntansha) |
塩田 達俊 埼玉大学, 理工学研究科, 准教授 (10376858)
田中 洋介 東京農工大学, 工学(系)研究科(研究院), 准教授 (20283343)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2014: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Keywords | 光周波数コム / 分光 / 光周波数シフタ |
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| Outline of Final Research Achievements |
The purpose of this study is to develop a frequency-variable comb generation technology, which enables frequency shift of all modes of broadband comb with wide mode interval at once. In addition, we explore a novel spectroscopy with broad bandwidth and high resolution introducing the frequency-variable laser comb to a spectrograph.
We confirmed that optical short pulse with 4-ps pulse width and 12.5-GHz repetition rate generated by pulse shaping was frequency-shifted with MHz precision by using a single sideband modulator. After the compression and amplification of the pulse, it was incident on a highly-nonlinear fiber, and we successfully generated a broadband and frequency-variable laser comb ranging from 1100 to 1700 nm. The frequency-variable laser comb was input into the diffraction grating spectrometer and the spectra of low pressure gas and Fabry-Perot filter were obtained with a resolution of 1 MHz.
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Report
(4 results)
Research Products
(24 results)
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[Journal Article] 12.5-GHz-spaced laser frequency comb covering Y, J, and H bands for Infrared Doppler instrument2016
Author(s)
Kokubo, T.; Mori, T.; Kurokawa, T.; Kashiwagi, K.; Tanaka, Y.; Kotani, T.; Nishikawa, J.; Tamura, M.
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Journal Title
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] IRドップラー観測用光周波数コムの広帯域化2015
Author(s)
森貴宏, 奥山康志, 柏木謙, 田中洋介, 黒川隆志, 小谷隆行, 西川淳, 田村元秀
Organizer
第62回応用物理学会春季学術講演会, 12p-A15-8
Place of Presentation
東海大学 湘南キャンパス, 神奈川県
Year and Date
2015-03-12
Related Report
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[Book] Astronomy in Focus2016
Author(s)
J. Nishikawa, M. Oya, N. Murakami, M. Tamura, T. Kurokawa, Y. Tanaka, T. Kotani
Total Pages
509
Publisher
Cambridge Univ. Press
Related Report
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