VCSEL-based laser hygrometer using rapidly time division multiplexed direct absorption and wavelength modulation spectroscopy

Alexander Klein; Volker Ebert; Volker Ebert

doi:10.1364/LACSEA.2014.LTu3D.5

Imaging and Applied Optics 2014
OSA Technical Digest (online) (Optica Publishing Group, 2014),
paper LTu3D.5
•https://doi.org/10.1364/LACSEA.2014.LTu3D.5

VCSEL-based laser hygrometer using rapidly time division multiplexed direct absorption and wavelength modulation spectroscopy

Alexander Klein and Volker Ebert

Laser Applications to Chemical, Security and Environmental Analysis 2014

Seattle, Washington United States
13–17 July 2014
ISBN: 978-1-55752-308-2

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LACSEA VI: Raman and Absorption-Based Measurements (LTu3D)

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A. Klein and V. Ebert, "VCSEL-based laser hygrometer using rapidly time division multiplexed direct absorption and wavelength modulation spectroscopy," in Imaging and Applied Optics 2014, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper LTu3D.5.

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Abstract

A newly developed spectroscopic modulation scheme enables absolute gas concentration measurements with enhanced precision and dynamic range by time multiplexing calibration-free direct tunable diode laser absorption (dTDLAS) and wavelength modulation spectroscopy (WMS).

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