Dual-comb spectroscopy at visible wavelength range using Er fiber combs
| Project/Area Number |
15H02028
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Optical engineering, Photon science
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| Research Institution | Yokohama National University |
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Principal Investigator |
HONG Feng-Lei 横浜国立大学, 大学院工学研究院, 教授 (10260217)
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| Co-Investigator(Kenkyū-buntansha) |
大久保 章 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 主任研究員 (30635800)
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| Co-Investigator(Renkei-kenkyūsha) |
YOSHII Kazumichi 横浜国立大学, 大学院工学研究院, 助教 (90582627)
INABA Hajime 産業技術総合研究所, 物理計測標準研究部門, 研究グループ長 (70356492)
SASADA Hiroyuki 慶應義塾大学, 理工学部, 教授 (30146576)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥34,190,000 (Direct Cost: ¥26,300,000、Indirect Cost: ¥7,890,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2015: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
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| Keywords | 光コム / レーザー分光 / 精密分光 / デュアルコム分光 / ファイバーコム / 分子分光 / 原子分光 / 周波数安定化レーザー / デュアルコム / 原子・分子分光 / 超精密測定 / 可視域 / 量子エレクトロニクス / 原子・分子物理 |
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| Outline of Final Research Achievements |
We have performed dual-comb spectroscopy using maintenance-free and reliable fiber combs. We establish a dual-comb spectrometer from the development of optical sources to the verification of the observed results. In the visible comb generation experiment, we performed broadband comb generation using wave-guide-type periodically poled lithium niobate crystal and revealed the mechanism of the broadening. We have also developed 20-MHz low-repetition-rate combs for high-resolution dual-comb spectroscopy. In this case acetylene absorption lines were observed. In the visible range, dual-comb spectroscopy were performed to observe absorption lines of molecular iodine. We found that a higher signal-to-noise ratio can be obtained by fitting the background signals.
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Report
(4 results)
Research Products
(66 results)
