Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs
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Otros documentos de la autoría: Durán, Vicente; Schnébelin, Come; Guillet de Chatellus, Hume
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/43662
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Título
Coherent multi-heterodyne spectroscopy using acousto-optic frequency combsFecha de publicación
2018Editor
Optical Society of AmericaISSN
1094-4087Cita bibliográfica
DURÁN, Vicente; SCHNÉBELIN, Cȏme; DE CHATELLUS, Hugues Guillet. Coherent multi-heterodyne spectroscopy using acousto-optic frequency combs. Optics express, 2018, vol. 26, no 11, p. 13800-13809.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-11-13800&origin=searchVersión
info:eu-repo/semantics/publishedVersionResumen
We propose and characterize experimentally a new source of optical frequency combs for performing multi-heterodyne spectrometry. This comb modality is based on a frequency-shifting loop seeded with a continuous-wave ... [+]
We propose and characterize experimentally a new source of optical frequency combs for performing multi-heterodyne spectrometry. This comb modality is based on a frequency-shifting loop seeded with a continuous-wave (CW) monochromatic laser. The comb lines are generated by successive passes of the CW laser through an acousto-optic frequency shifter. We report the generation of frequency combs with more than 1500 mutually coherent lines, without resorting to non-linear broadening phenomena or external electronic modulation. The comb line spacing is easily reconfigurable from tens of MHz down to the kHz region. We first use a single acousto-optic frequency comb to conduct self-heterodyne interferometry with a high frequency resolution (500 kHz). By increasing the line spacing to 80 MHz, we demonstrate molecular spectroscopy on the sub-millisecond time scale. In order to reduce the detection bandwidth, we subsequently implement an acousto-optic dual-comb spectrometer with the aid of two mutually coherent frequency shifting loops. In each architecture, the potentiality of acousto-optic frequency combs for spectroscopy is validated by spectral measurements of hydrogen cyanide in the near-infrared region. [-]
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Optics Express Vol. 26, Issue 11.Proyecto de investigación
ANR-14-CE32-0022Derechos de acceso
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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