30 November 1999 New laser system for sensitive remote sensing of ammonia in human breath
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This paper describes the theory and design of a new laser system for monitoring ammonia in human breath to provide information on the clinical course in patients with liver disease. The technique depends upon proper illumination of human breath with radiation from modulated laser sources at selected wavelengths. The wavelength selection is based on the absorption characteristics of ammonia and other interfering sources. The laser radiation transmitted through the breath gases is detected and their signal processing is based on differential absorption laser spectroscopy. This is done in such a way to overcome the performance limitations of conventionally available equipment. The detailed description and operating characteristics of this system are presented.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mostafa Hamza, Mohammad Hamza Sayed El-Ahl, and Ahmad Mohammad Hamza "New laser system for sensitive remote sensing of ammonia in human breath", Proc. SPIE 3855, Air Monitoring and Detection of Chemical and Biological Agents II, (30 November 1999); doi: 10.1117/12.371276; https://doi.org/10.1117/12.371276

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