Time-resolved dual-comb spectroscopy with a single electro-optic modulator
| Autor: | Edoardo Vicentini, Zaijun Chen, Jeong Hyun Huh, Nathalie Picqué, Theodor W. Hänsch |
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| Rok vydání: | 2021 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Materials science Absorption spectroscopy Spectrometer Atomic Physics (physics.atom-ph) business.industry Near-infrared spectroscopy FOS: Physical sciences Electro-optic modulator Physics - Applied Physics Applied Physics (physics.app-ph) Laser Atomic and Molecular Physics and Optics Physics - Atomic Physics law.invention Interferometry Optics law Physics - Chemical Physics Time-resolved spectroscopy Spectroscopy business Physics - Optics Optics (physics.optics) |
| Zdroj: | Optics letters. 46(16) |
| ISSN: | 1539-4794 |
| Popis: | Time-resolved near-infrared absorption spectroscopy of single non-repeatable transient events is performed at high spectral resolution with a dual-comb interferometer using a continuous-wave laser followed by a single electro-optic amplitude modulator. By sharing high-speed electrical/optical components, our spectrometer greatly simplifies the implementation of dual-comb spectroscopy and it offers a high mutual coherence time, measured up to 50-s, without any active stabilization system and/or data processing. The time resolution, which can be reconfigured a posteriori, is as short 100 microseconds in our experimental demonstration. For a span of 36 GHz, the mean signal-to-noise ratio of 80, at 100-MHz spectral resolution and 100-microsecond measurement time, enables the precise determination of the parameters of rovibrational lines, including intensity or concentration. Comment: 8 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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