| Review on VUV to MIR absorption spectroscopy of atmospheric pressure plasma jets S Reuter, JS Sousa, GD Stancu, JPH van Helden Plasma Sources Science and Technology 24 (5), 054001, 2015 | 141 | 2015 |
| Detailed study of the plasma-activated catalytic generation of ammonia in N2-H2 plasmas JH Van Helden, W Wagemans, G Yagci, RAB Zijlmans, DC Schram, ... Journal of applied physics 101 (4), 2007 | 112 | 2007 |
| Direct and wavelength modulation spectroscopy using a cw external cavity quantum cascade laser G Hancock, JH Van Helden, R Peverall, GAD Ritchie, RJ Walker Applied Physics Letters 94 (20), 2009 | 93 | 2009 |
| Demonstration of a mid-infrared cavity enhanced absorption spectrometer for breath acetone detection L Ciaffoni, G Hancock, JJ Harrison, JPH van Helden, CE Langley, ... Analytical chemistry 85 (2), 846-850, 2013 | 82 | 2013 |
| Sensitive trace gas detection with cavity enhanced absorption spectroscopy using a continuous wave external-cavity quantum cascade laser JH van Helden, N Lang, U Macherius, H Zimmermann, J Röpcke Applied Physics Letters 103, 131114, 2013 | 70 | 2013 |
| Production Mechanisms of NH and NH2 Radicals in N2−H2 Plasmas JH Van Helden, PJ Van Den Oever, WMM Kessels, MCM Van De Sanden, ... The Journal of Physical Chemistry A 111 (45), 11460-11472, 2007 | 65 | 2007 |
| Controlling the emission profile of an H2 discharge lamp to simulate interstellar radiation fields NFW Ligterink, DM Paardekooper, KJ Chuang, ML Both, GA Cruz-Diaz, ... Astronomy & Astrophysics 584, A56, 2015 | 52 | 2015 |
| Sensitive CH_4 detection applying quantum cascade laser based optical feedback cavity-enhanced absorption spectroscopy N Lang, U Macherius, M Wiese, H Zimmermann, J Röpcke, ... Optics Express 24 (6), A536-A543, 2016 | 51 | 2016 |
| Optical feedback cavity-enhanced absorption spectroscopy with a 3.24 μm interband cascade laser KM Manfred, GAD Ritchie, N Lang, J Röpcke, JH Van Helden Applied Physics Letters 106 (22), 2015 | 49 | 2015 |
| Density and production of NH and NH2 in an Ar–NH3 expanding plasma jet PJ Van den Oever, JH Van Helden, CCH Lamers, R Engeln, DC Schram, ... Journal of applied physics 98 (9), 2005 | 48 | 2005 |
| Solid carbon active screen plasma nitrocarburizing of AISI 316L stainless steel in cold wall reactor: Influence of plasma conditions SM Jafarpour, A Puth, A Dalke, J Böcker, AV Pipa, J Röpcke, ... Journal of Materials Research and Technology 9 (4), 9195-9205, 2020 | 43 | 2020 |
| HO2 reaction kinetics in an atmospheric pressure plasma jet determined by cavity ring-down spectroscopy M Gianella, S Reuter, S Press, A Schmidt-Bleker, J Hubertus van Helden, ... Plasma Sources Science and Technology 27 (9), 2018 | 39 | 2018 |
| Phase-shift cavity ring-down spectroscopy to determine absolute line intensities JH Van Helden, DC Schram, R Engeln Chemical physics letters 400 (4-6), 320-325, 2004 | 39 | 2004 |
| Detection of HO2 in an atmospheric pressure plasma jet using optical feedback cavity-enhanced absorption spectroscopy M Gianella, S Reuter, AL Aguila, GAD Ritchie, JPH van Helden New Journal of Physics 18 (11), 113027, 2016 | 37 | 2016 |
| N, NH, and NH2 radical densities in a remote Ar–NH3–SiH4 plasma and their role in silicon nitride deposition PJ Van Den Oever, JH Van Helden, JL Van Hemmen, R Engeln, ... Journal of Applied Physics 100 (9), 2006 | 37 | 2006 |
| Cavity enhanced techniques using continuous wave lasers JH Van Helden, R Peverall, GAD Ritchie, G Berden, R Engeln Cavity Ring-Down Spectroscopy: Techniques and Applications, 27-56, 2009 | 35 | 2009 |
| Applications of midinfrared quantum cascade lasers to spectroscopy G Hancock, G Ritchie, JP van Helden, R Walker, D Weidmann Optical Engineering 49 (11), 111121-111121-7, 2010 | 34 | 2010 |
| Application of quantum cascade lasers in studies of low-pressure plasmas: Characterization of rapid passage effects on density and temperature measurements JH Van Helden, SJ Horrocks, GAD Ritchie Applied Physics Letters 92 (8), 2008 | 34 | 2008 |
| High-performance GaAs/AlAs terahertz quantum-cascade lasers for spectroscopic applications L Schrottke, X Lu, B Roben, K Biermann, T Hagelschuer, M Wienold, ... IEEE Transactions on Terahertz Science and Technology 10 (2), 133, 2020 | 33 | 2020 |
| Applying quantum cascade laser spectroscopy in plasma diagnostics J Röpcke, PB Davies, S Hamann, M Hannemann, N Lang, ... Photonics 3 (3), 45, 2016 | 32 | 2016 |
