Time-resolved due comb spectroscopy with a single electro-optic modulator

Huh, Jeong Hyun; Chen, Zaijun; Vicentini, Edoardo; Haensch, Theodor W. und Picque, Nathalie (2021): Time-resolved due comb spectroscopy with a single electro-optic modulator. In: Optics Letters, Bd. 46, Nr. 16: S. 3957-3960

Abstract

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 offers a high mutual coherence time, measured up to 50 s, without any active stabilization system and/or data processing. The time resolution is as short as 100 is 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-mu s measurement time, enables precise determination of the parameters of rovibrational lines, including intensity or concentration. (C) 2021 Optical Society of America

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0146-9592
• Sprache: Englisch