A compact Raman converter for UV-VIS spectrometers

Abstract

A small form factor, easily constructed converter that adapts fiber coupled UV/VIS CCD detector-based spectrometers into a right angle scattering Raman spectrometer is described. Its design philosophy and design are discussed. An example measurement, the depolarization ratio of carbon tetrachloride, a classic Raman test compound, is presented. The unique instrument features a blue-violet (405 nm wavelength) diode laser that takes advantage of the inverse fourth power wavelength dependence of Raman scattering. The converter also features Glan-Thompson polarizing prisms that enable measurement of depolarization ratios. The spectrometer is also capable of measuring a standard Raman spectrum. A fiber optic link offers flexibility when adapting the converter to any spectrometer system that accepts a fiber optic input. The performance of the instrument is critically discussed in the context of an example measurement.

Raman Based Molecular Imaging and Analytics: A Magic Bullet for Biomedical Applications!?

“…This includes the developments in sensor elements, e.g., for time-of-flight experiments, which might be adapted in the near future. Further a miniaturization takes place while maintaining all functionalities of a large systems . Investigations on the optimization of existing instruments are ongoing in order to use different wavelengths .…”

“…Further a miniaturization takes place while maintaining all functionalities of a large systems. 33 Investigations on the optimization of existing instruments are ongoing in order to use different wavelengths. 34 Also other setup changes and variations such as a wide-field imaging possibilities were described recently.…”