Axsun Technologies, Inc.

Lawrence McDermott

Dale C Flanders

Walid A Atia

Bartley C Johnson

Robert K Jenner

A system of gas property monitoring comprises a gas cell for containing a gas of interest and a semiconductor tunable laser spectroscopy system for generating a tunable signal that is transmitted through the gas of interest in the gas cell and detecting the tunable signal after transmission through the gas of interest. An analyzer is provided for relating a spectral response of the gas of interest to a property of interest, such as an energy content of the gas of interest.

Semiconductor laser natural gas analysis system and method

A tunable laser spectroscopic carpet identification system comprises a tunable laser spectroscopy system for generating a tunable signal that is transmitted to a carpet sample. The system detects the tunable signal after interaction with the carpet sample so that an analyzer is able to relate a spectral response of the carpet sample to a chemical composition of the carpet sample. In one example, the spectroscopy system comprises a laser cavity in which the tunable signal is generated, a semiconductor gain medium in the laser cavity, and a tunable element for controlling a wavelength of tunable signal generated in the laser cavity. To deal with variations in water content, the analyzer estimates a water content of the carpet sample using the spectral response of the carpet sample and then determines the chemical composition of the carpet sample in part based on the estimate of the water content.

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Groton, MA, United States of America

Lawrence McDermott