Journal
OPTICS EXPRESS
Volume 28, Issue 20, Pages 29148-29154Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.400433
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Funding
- Jet Propulsion Laboratory
- Defense Advanced Research Projects Agency
- National Institute of Standards and Technology
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We demonstrate a dual-comb spectrometer based on electro-optic modulation of a continuous-wave laser at 10 GHz. The system simultaneously offers fast acquisition speed and ultrabroad spectral coverage, spanning 120 THz across the near infrared. Our spectrometer is highly adaptable, and we demonstrate absorption spectroscopy of atmospheric gases and a dual-comb configuration that captures nonlinear Raman spectra of semiconductor materials via coherent anti-Stokes Raman scattering. The ability to rapidly and simultaneously acquire broadband spectra with high frequency resolution and high sensitivity points to new possibilities for hyperspectral sensing in fields such as remote sensing, biological detection and imaging, and machine vision. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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