Stokes Shift, named after Irish physicist George Gabriel Stokes, is the term given to the spectral shift to lower energy between the incident light and the scattered or emitted light after interaction with a sample. The Stokes Shift is an important concept in both Fluorescence and Raman spectroscopy and is introduced in this article.
Latest from the blog
Mapping the Raman spectra within a sample area provides previously unavailable information about the chemical and physical differences across a sample. This article uses data gathered by mapping a commercial composite pain killer tablet. Learn more about this powerful technique.
Each year Edinburgh Instruments welcomes a selection of bright, aspiring young students from local schools and universities. This year we were joined by a group of eager and skilled young people who wanted to develop their skills in their preferred field. Discover more about our students and find out how Edinburgh Instruments has been preparing them for the world of work.
In this article, the definitions of transmittance and absorbance of light by a substance are first introduced followed by an explanation of the Beer-Lambert Law.
When fluorescence spectra are measured in Edinburgh Instruments fluorescence spectrometers, two types of correction can be applied to the spectra; excitation and emission. In our previous blog post, we focused on emission correction and its role in the detection system. Now we turn our attention to excitation correction.
The FLS1000 Photoluminescence Spectrometer can be equipped with up to 5 different detectors (8 if two emission monochromators are present), and there is a wide range to choose from including analogue, high-speed detectors or NIR-sensitive photomultiplier tubes (PMTs). In this blog post we help you to select the best photomultiplier detector for your application, either when you first buy an instrument or when you are considering an upgrade.
Fluorescence lifetime standards are useful for checking the calibration of fluorescence lifetime spectrometers and accounting for the possible wavelength dependent response of detectors. View our handy guide to Fluorescence Lifetime Standards.
When fluorescence spectra are measured in Edinburgh Instruments fluorescence spectrometers, two types of correction can be applied to the spectra; excitation and emission correction. In this blog post we focus on the role of emission correction and discuss why it is required, how it is implemented, and the effect it has on the shape of fluorescence spectra.
All the key terms related to Fluorescence Spectroscopy can be found in this comprehensible glossary. Easily browse through and find the the definition for the term you are interested in.
Browse this collection of notable papers published by Edinburgh Instruments customers over the month of March.