Conclusion
The achieved quantum limited sensitivity demonstrate that using distributed feedback diode lasers in combination with two-tone frequency modulation spectroscopy is a powerful technique for gas detection. It is possible to detect traces gases in air with a sensitivity on a ppm-level over a 1-meter path-length for some molecules of industrial, medical and environmental interest.
The natural combination with fiber optics technology make these sensors attractive for a large variety of “in situ” measurements.
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© 2002 Kluwer Academic Publishers
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Corsi, C., Inguscio, M. (2002). High Sensitivity Trace Gas Monitoring Using Semiconductor Diode Lasers. In: Martellucci, S., Chester, A.N., Mignani, A.G. (eds) Optical Sensors and Microsystems. Springer, Boston, MA. https://doi.org/10.1007/0-306-47099-3_17
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DOI: https://doi.org/10.1007/0-306-47099-3_17
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