Column: Lasers and Optics Interface

Oct 01, 2014
Spectroscopy
Users must be careful when developing material classification and calibration methods for LIBS. By following some guidelines, one can achieve relative standard deviation values of 2–3% for many types of analysis, and below 1% for homogenous samples.
Jul 01, 2014
Spectroscopy
By Spectroscopy Editors
In the study of global warming, obtaining good data demands widely deployed, accurate, and reliable sensors for identifying and understanding the origins, sources, and fates of greenhouse gases. Sensing technologies based on tunable diode laser absorption spectroscopy are starting to provide some of this critical data.
Apr 01, 2014
Spectroscopy
The choices for LIBS hardware are discussed in detail, particularly lasers and spectrometers, and the trade-offs between cost, size, and performance are illustrated.
Jan 01, 2014
Spectroscopy
An overview for those considering implementation of LIBS to solve a particular analytical problem, and an introduction for those interested in learning more about LIBS. Part I concentrates on the basics of the measurement and typical implementation.
Jul 01, 2013
Spectroscopy
By Spectroscopy Editors
Here, Martin Zanni explains two dimensional (2D) infrared spectroscopy, the role of lasers, and current applications, such as studying the kinetics of protein aggregation in diabetes.
Apr 01, 2013
Spectroscopy
By Spectroscopy Editors
Mid-infrared quantum cascade lasers, recently developed and commercialized, have unique properties that advance the analytical capabilities of IR spectroscopy in many ways. Bernhard Lendl of Vienna University of Technology in Austria explains these developments.
Jan 01, 2013
Spectroscopy
By Spectroscopy Editors
Although the choice of laser is still highly dependent on the application requirements, there are distinct fundamental effects attributed to the laser pulse duration that drive the ablation sampling process. Here, we explain the differences between nanosecond and femtosecond laser ablation.
Jul 01, 2012
Spectroscopy
By Spectroscopy Editors
A report on first results of the successful application of optically pumped semiconductor lasers in Raman spectroscopy of condensed-phase samples
Apr 01, 2012
Spectroscopy
By Spectroscopy Editors
The theoretical and experimental differences between high-brightness and low-brightness lasers used in a dispersive confocal Raman microscope system are compared.
Jan 01, 2012
Spectroscopy
By Spectroscopy Editors
The basic techniques of fluorescence correlation spectroscopy (FCS) are discussed as well as several applications, such as nanoparticle dispersion studies.
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