Novel diode laser-based sensors for gas sensing applications |
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Authors: | Tittel F K Lancaster D G Richter D |
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Affiliation: | Rice Quantum Institute, Rice University, Houston, TX 77005, USA. fkt@rice.edu |
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Abstract: | The development of compact spectroscopic gas sensors and their applications to environmental sensing will be described. These sensors employ mid-infrared difference-frequency generation (DFG) in periodically poled lithium niobate (PPLN) crystals pumped by two single-frequency solid state lasers such as diode lasers, diode-pumped solid state, and fiber lasers. Ultrasensitive, highly selective, and real-time measurements of several important atmospheric trace gases, including carbon monoxide, nitrous oxide, carbon dioxide, formaldehyde [correction of formaldehye], and methane, have been demonstrated. |
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