Dr. Donald M. Friedrich Profile

Dr. Donald M. Friedrich

Retired

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Publications (3)

Proceedings Article | 21 May 2014 Paper

Pocket-size near-infrared spectrometer for narcotic materials identification

Christopher Pederson, Donald Friedrich, Chang Hsiung, Marc von Gunten, Nada O'Brien, Henk-Jan Ramaker, Eric van Sprang, Menno Dreischor

Proceedings Volume 9101, 91010O (2014) https://doi.org/10.1117/12.2050019

KEYWORDS: Spectroscopy, Near infrared, Calibration, Infrared spectroscopy, Data modeling, Statistical modeling, Principal component analysis, Optical filters, Linear filtering, Absorbance

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Proceedings Article | 8 March 2014 Paper

Miniature near-infrared spectrometer for point-of-use chemical analysis

Donald Friedrich, Charles Hulse, Marc von Gunten, Eric Williamson, Christopher Pederson, Nada O'Brien

Proceedings Volume 8992, 899203 (2014) https://doi.org/10.1117/12.2040669

KEYWORDS: Spectroscopy, Near infrared, Detector arrays, Chemical analysis, Sensors, Calibration, Near infrared spectroscopy, Optical filters, Reflectivity, Humidity

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Proceedings Article | 18 May 2012 Paper

Miniature near-infrared (NIR) spectrometer engine for handheld applications

Nada O'Brien, Charles Hulse, Donald Friedrich, Fred Van Milligen, Marc von Gunten, Frank Pfeifer, Heinz Siesler

Proceedings Volume 8374, 837404 (2012) https://doi.org/10.1117/12.917983

KEYWORDS: Spectroscopy, Calibration, Near infrared, Soil contamination, Contamination, Soil science, Linear filtering, Spectral resolution, Mid-IR, Infrared spectroscopy

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