Diode Lasers Sing Spectroscopy's Tune
Bob Shine and Tim Day, New Focus Inc.
Environmental issues such as global warming, ozone depletion and
photochemical air pollution have increased concern about how pollutants
affect the environment. This has led to an increased emphasis on detecting
pollutants, understanding their sources of origin and measuring their
concentrations in the environment. Laser-based detection methods are useful
for these measurements; absorption spectroscopy can provide high detection
sensitivity of many different species.
The system designer has many alternatives when choosing semiconductor
lasers and system configurations for spectroscopy applications. The
price/performance trade-offs create myriad possibilities, each of which has
advantages for specific applications. This article addresses the trade-offs
among Fabry-Perot semiconductor lasers, external-cavity diode lasers and
distributed feedback lasers and suggests ideal uses in research &
development and commercial applications.
LATEST NEWS
- CLEO Heads to the East Coast
Apr 29, 2024
- Laser-Based Gas Analyzer Developed to Detect Air Pollution
Apr 29, 2024
- Qubits Could be Stored in Flash-Like Memory
Apr 29, 2024
- Exail Signs LLNL Contract, Partners with Eelume
Apr 26, 2024
- Menlo Moves U.S. HQ: Week in Brief: 4/26/2024
Apr 26, 2024
- Optofluidics Platform Keys Label-, Amplification-Free Rapid Diagnostic Tool
Apr 25, 2024
- DUV Lasers Made with Nonlinear Crystals Enhance Lithography Performance
Apr 25, 2024
- Teledyne e2v, Airy3D Collaborate on 3D Vision Solutions
Apr 24, 2024