Category : Laser components, systems, equipment and applications > Laser components and systems

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OPOTEK Inc, makers of tunable OPO laser systems, has been developing a compact portable instrument for the detection of trace aromatic vapors using jet-REMPI technology. The instrument we developed is a highly-sensitive, real-time device for the detection of a variety of species with high chemical sensitivity. By providing rapid measurements of process contaminants, this instrument will yield timely information for process optimization, resulting in increased product yields. With a target detection limit of ~100 ppt for a wide variety of vapors, including most common aromatic solvents, the system will be able to provide highly sensitive monitoring of trace contaminants in the clean-room environment.
Unlike competitive techniques such as gas chromatography, the jet-REMPI instrument does not need lengthy sample pre-concentration and separation in order to provide this level of performance. Detection sensitivities in the 100 ppt range can be obtained within seconds directly
from ambient air. The system can also rapidly switch between detecting different species within
seconds to provide real-time monitoring of multiple contaminants with using a single instrument.
A preliminary design of a portable system resulted in the following system specifications:
The entire unit will measure 18"(W)x 25"(D)x38"(H) and weigh about 200 lbs, will be entirely air cooled, and require only 110V 15A electrical service. The small package size and limited external requirements make this type of system ideal for many portable measurements that can take advantage of jet-REMPI's unique real-time performance capabilities

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