Demonstration of cavity enhanced FTIR spectroscopy using a femtosecond laser absorption source
| Autor: | Keevin Didriche, Clément Lauzin, X. de Ghellinck d'Elseghem Vaernewijckb, Samir Kassi, A. Rizopoulos, Michel Herman |
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| Přispěvatelé: | LAsers, Molécules et Environnement (LAME-LIPhy), Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Service de Chimie Quantique et Photophysique, Université libre de Bruxelles (ULB) |
| Rok vydání: | 2010 |
| Předmět: |
02 engineering and technology
7. Clean energy 01 natural sciences Absorption Analytical Chemistry law.invention 010309 optics Atmosphere symbols.namesake Optics law Spectroscopy Fourier Transform Infrared 0103 physical sciences Fourier transform infrared spectroscopy Absorption (electromagnetic radiation) Instrumentation Spectroscopy Titanium Samarium [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Chemistry business.industry Lasers Resolution (electron density) 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Oxygen Interferometry Fourier transform Femtosecond symbols 0210 nano-technology business |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-...] Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], Elsevier, 2010, 75, pp.142-145. ⟨10.1016/J.SAA.2009.09.058⟩ |
| ISSN: | 1386-1425 |
| Popis: | International audience; A proof of principle experiment was performed by recording the cavity enhanced absorption spectrum of the weak b- X transition of molecular oxygen in the atmosphere using a Ti:Sa femtosecond laser as an absorption source and a high resolution continuous scan Fourier transform interferometer. The cavity was mode matched and either continuously scanned or stabilized at the so-called magic point. An optimal rms noise equivalent absorption of 3 × 10 -7 cm -1 Hz -1/2 was reached in the latter case, corresponding to αmin = 3 × 10 -7 cm -1. |
| Databáze: | OpenAIRE |
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