Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Diode Lasers Pinpoint Pollutants

Facebook Twitter LinkedIn Email Comments
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 diode lasers have reduced the need for specialize technical know-how. Meanwhile, strained semiconductor materials and quantum cascade diode laser architectures are pushing into the mid-IR ­ a crucial portion of the spectrum for toxic pollutants.

Photonics Spectra
Apr 1998

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.