Alexander Klein

VCSEL-based, high-speed, in situ TDLAS for in-cylinder water vapor measurements in IC engines

Oliver Witzel, Alexander Klein, C. Meffert et al. · Optics Express · 2013 · 134 citations · Full text

Electrical Engineering, Engineering, Laser Science +14

Rapid, Time-Division Multiplexed, Direct Absorption- and Wavelength Modulation-Spectroscopy

Alexander Klein, Oliver Witzel, Volker Ebert · Sensors · 2014 · 80 citations · Full text

Time-division Multiplexed, Photonics, Engineering +15

Measurement of water vapor line strengths in the 1.4–2.7 µm range by tunable diode laser absorption spectroscopy

Andrea Pogány, Alexander Klein, Volker Ebert · Journal of Quantitative Spectroscopy and Radiative Transfer · 2015 · 64 citations

Engineering, µM Range, Optical Properties +7

High-speed tunable diode laser absorption spectroscopy for sampling-free in-cylinder water vapor concentration measurements in an optical IC engine

Oliver Witzel, Alexander Klein, Steven Wagner et al. · Applied Physics B · 2012 · 59 citations

Photonics, Engineering, Optical Ic Engine +9

HAI, a new airborne, absolute, twin dual-channel, multi-phase TDLAS-hygrometer: background, design, setup, and first flight data

Bernhard Buchholz, Armin Afchine, Alexander Klein et al. · Atmospheric measurement techniques · 2017 · 41 citations · Full text

Environmental Monitoring, Engineering, Measurement +20