Ultra-broadband dual-comb spectroscopy across 1.0–1.9 µm
Open accessAbstract
We have carried out dual-comb spectroscopy and observed in a simultaneous acquisition a 140-THz-wide spectrum from 1.0 to 1.9 µm using two fiber-based frequency combs phase-locked to each other. This ultrabroad-wavelength bandwidth is realized by setting the difference between the repetition rates of the two combs to 7.6 Hz using the sub-Hz-linewidth fiber combs. The recorded spectrum contains five vibration-rotation bands of C 2 H 2 , CH 4 , and H 2 O at different wavelengths across the whole spectrum. The determined transition frequencies of C 2 H 2 agree with those from the previous sub-Doppler resolution measurement of individual lines using CW lasers within 2 MHz.
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T(ω) and ΔΦabs(ω) are connected with N(ω)=n(ω)+ik(ω) and d as shown in equation 33.
“T ( ω ) and Δ Φ abs( ω ) are connected with N ( ω )= n ( ω )+ ik ( ω ) and d as shown in the following equation 33 :”
From Ultra-precise determination of thicknesses and refractive indices of optically thick dispersive materials by dual-comb spectroscopy (2022) · cites this paper as [33]
The paper’s absorption-spectrum discussion (section labeled Abstract; page unavailable) mentions fitting an absorption length, but does not give a relationship between transmission and absorption phase, the complex refractive index, and thickness. Searches for the stated symbols and for a complex-refractive-index transmission equation found no passage addressing that relationship. (LLM, conf=0.72)
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Kawai, A., Kageyama, T., Horisaki, R., & Ideguchi, T. (2021) · Scientific Reports · doi:10.1038/s41598-021-93005-1 · Cited by 14 · see citing works
Sumihara, K. A., Okubo, S., Okano, M., Inaba, H., & Watanabe, S. (2022) · Optics Express · doi:10.1364/oe.445134 · Cited by 13 · see citing works
Self-citationLou, H., Deng, Z., Luo, D., Pan, J., Zhou, L., Xie, G., Gu, C., & Li, W. (2024) · Optics Express · doi:10.1364/oe.514809 · Cited by 12 · see citing works
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Recent Advances, Applications, and Perspectives in Erbium-Doped Fiber Combs
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Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
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Microring Electro-optic Frequency Comb Sources for Dual-Comb Spectroscopy
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Self-citationUltra-low noise spectral broadening of two combs in a single ANDi fiber
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Self-citationNoise characteristics of a polarization-duplex dual-comb fiber laser based on a single gain fiber
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Self-citation
- Authors
- Okubo, S., Iwakuni, K., Inaba, H., Hosaka, K., Onae, A., Sasada, H., & Hong, F.-L.
- Affiliations
- Japan Science and Technology Agency (JP)
- Keio University (JP)
- Corresponding author
- Okubo, Sho
- Venue
- Applied Physics Express
- Publisher
- IOP Publishing
- Published
- 2015-07-15
- Volume
- 8
- Issue
- 8
- Pages
- 082402
- ISSN
- 1882-0778 (ISSN-L)
- 1882-0786
- OpenAlex
- W1846750575
- Cited by
- 173
- References
- 22
- Citations by year
- 2026: 10 · 2025: 9 · 2024: 10 · 2023: 9 · 2022: 7 · 2021: 20 · 2020: 21 · 2019: 24 · 2018: 24 · 2017: 15 · 2016: 23 · 2015: 1
- FWCI
- 10.67
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Applied Physics Express (publishedVersion, cc-by)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Ministry of Education, Culture, Sports, Science and Technology (23244084)
- Japan Society for the Promotion of Science (22540415, 23244084, 23560048)
- Japan Science and Technology Agency (23560048, 23244084)
- Collaborative Research Based on Industrial Demand
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Fiber Laser Technologies
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
- Keywords
- dual-comb spectroscopy, fiber frequency comb, mid-infrared spectroscopy, vibration-rotation bands, acetylene, methane, water, transition frequencies, sub-Doppler resolution
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