caa a22 4500 44536808X CHVBK 20180317142937.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00340-010-4242-0 doi (NATIONALLICENCE)springer-10.1007/s00340-010-4242-0 Rapid and sensitive trace gas detection with continuous wave Optical Parametric Oscillator-based Wavelength Modulation Spectroscopy [Elektronische Daten] [D. Arslanov, M. Spunei, A. Ngai, S. Cristescu, I. Lindsay, S. Persijn, K. Boller, F. Harren] A fiber-amplified Distributed Bragg Reflector diode laser is used to pump a continuous wave, singly resonant Optical Parametric Oscillator (OPO). The output radiation covers the 3-4 μm with ability of rapid (100 THz/s) and broad mode-hop-free tuning (5 cm−1). Wavelength Modulation Spectroscopy is combined with the OPO to take optimal advantage of the spectral scan speed. The sensitivity of the system was determined as 0.8 ppbv (parts-per-billion by volume) for ethane (C2H6) for the absorption peak at 2996.9 cm−1 recorded in 1.3 seconds, corresponding to a noise equivalent absorption sensitivity (NEAS) of 1.2×10−9 cm−1/Hz1/2. A comparison between results using the 1st, 2nd and 4th harmonic derivative signal from wavelength modulation was performed. The broad continuous tunability was demonstrated by covering 35 cm−1 while recording absorption features of ethane, methane and water. The Author(s), 2010 Arslanov D. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut Spunei M. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut Ngai A. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut Cristescu S. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut Lindsay I. EPSRC Advanced Research Fellow Nanophysics and Soft Matter Group, H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, Bristol, UK aut Persijn S. VSL, Thijsseweg 11, 2629 JA, Delft, The Netherlands aut Boller K. Laser Physics and Nonlinear Optics Group, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands aut Harren F. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut Applied Physics B Springer-Verlag 103/1(2011-04-01), 223-228 0946-2171 103:1<223 2011 103 340 https://doi.org/10.1007/s00340-010-4242-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4242-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arslanov D. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Spunei M. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Ngai A. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Cristescu S. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut NATIONALLICENCE 700 1- Lindsay I. EPSRC Advanced Research Fellow Nanophysics and Soft Matter Group, H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, Bristol, UK aut NATIONALLICENCE 700 1- Persijn S. VSL, Thijsseweg 11, 2629 JA, Delft, The Netherlands aut NATIONALLICENCE 700 1- Boller K. Laser Physics and Nonlinear Optics Group, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands aut NATIONALLICENCE 700 1- Harren F. Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, 6500 GL, Nijmegen, The Netherlands aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/1(2011-04-01), 223-228 0946-2171 103:1<223 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer