Spectroscopy-11-01-2005
Savitzky–Golay Smoothing and Differentiation Filter of Even Length: A Gram Polynomial Approach
November 1st 2005In various fields such as signal processing, imaging processing, analytical chemistry, and spectroscopic analysis, smoothing and differentiation is important and necessary. With a matrix approach, the Savitzky–Golay smoothing and differentiation filter was extended recently to even length. In this article, a more general approach is proposed for convenient computation.
Focus on Quality — Validation of Spectrometry Software: Importance of Accurate Date and Time Stamps
November 1st 2005Accurate and precise time and date stamps are critical to ensuring integrity of the data and results generated by each computerized system used in any spectroscopy laboratory.
Tutorial — Mass Analyzers: An Overview of Several Designs and Their Applications, Part I
November 1st 2005This tutorial illustrates the technical principles and typical applications of the most common mass analyzers used in bioanalytical laboratories today, as well as novel techniques and mass analyzer designs. Examples are based upon the authors' research in small molecule applications.
Continuous Wave Optical Parametric Oscillators Break New Spectral Ground
November 1st 2005New mid-infrared spectroscopic sources, based upon advances in fiber lasers and in nonlinear frequency conversion, are now enabling high-resolution laser spectroscopy in the 2–4 μm wavelength region and beyond. With this in mind, the authors discuss continuous wave (CW) optical parametric oscillators (OPOs) in particular.
