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DataRay Inc. - ISO 11146-Compliant Laser Beam Profilers

Diode Lasers Pinpoint Pollutants

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R. Winn Hardin, Associate Managing Editor

Diode-lasers have experienced limited success as environmental monitors because polluting chemicals weakly absorb light at commercially available diode-laser wavelengths. Also, although diode lasers offer one of the fastest and most sensitive ways to detect toxic gases, federal agencies and consumers often view optical remote sensing as an ''advanced technology,² requiring specialized training. Several forces could change this situation. New technologies that exploit extended cavity designs and nonlinear materials mean that a single device can detect multiple chemicals. Automation and new...Read full article

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    Published: April 1998
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