Resources and Spectroscopy Tips
Spectrometers for Imaging Applications
Development and use of novel optics in McPherson instruments improves imaging and suits two-dimensional CCD, CMOS and intensified detectors. No optical system is perfect, and the best choice of optics depends totally on the needs of the experiment. Balancing cost, complexity, surface quality, imaging performance, and spectral resolution, requires serious consideration before making an investment. Imaging spectrometers...
Gas Purging Keeps UV Systems Healthy
Photochemical deposition of organic films is a significant cause of performance loss in ultraviolet systems; when feasible, it can be reduced or eliminated with inert gas purging. Purged vacuum ultraviolet spectroscopy...
Scintillator Coating for VUV Detection
Sodium salicylate has been used extensively as a wavelength converter in the vacuum ultraviolet (vuv) spectral region. When excited by radiant energy of wavelengths shorter than about 350 nanometers, salicylate fluoresces in a band centered at ~420 nanometers. The usefulness of sodium salicylate results from its ...Read more
How to Specify a Monochromator
A few considerations to help draw up an informed spectrometer specification...wavelength range, spectral resolution or resolving power, f number (aperture ratio) or numerical aperture, stray light rejection, wavelength accuracy and reproducibility, level of automation, number of ports... Read more
Popular Spectrometer Designs
Popular spectrometer designs, the ones we've been asked to build again and again over the last 60 years. An overview of the optical designs proven to be useful for performance in a range of experimental situations. Read more...