Author | David Tuschel

David Tuschel is a Raman applications manager at Horiba Scientific in Edison, New Jersey, where he works with Fran Adar. David is sharing authorship of the "Molecular Spectroscopy Workbench" column with Fran.

Articles

Raman Thermometry: Understanding the Mathematics to Better Design Raman Measurements

December 01, 2019

Spectroscopy

Article

Raman measurements can be used to infer the temperature of a material based on the Stokes and anti-Stokes band signal strengths, and by applying a predefined mathematical relationship. In reality, the temperature, Raman shift, and laser excitation wavelength all interact, and should be considered to better understand these measurements.

Stress, Strain, and Raman Spectroscopy

September 01, 2019

Spectroscopy

Article

When stress is applied to an object, it can produce strain. Strain can be detected through changes in peak position and bandwidth in Raman spectra. Here, we show examples of how strain in technologically impor tant materials appears in the Raman spectra.

Exploring Resonance Raman Spectroscopy

December 01, 2018

Spectroscopy

Article

Resonance Raman spectroscopy demonstrates up to 106 signal enhancement. In this overview a detailed description of how resonance Raman spectroscopy differs from normal Raman spectroscopy is given with some specific examples explained.

Effect of Dopants or Impurities on the Raman Spectrum of the Host Crystal

December 01, 2017

Spectroscopy

Article

Raman spectroscopy is a convenient method for probing the chemical bonding and solid state structure of crystals, and it is sensitive to the presence of dopants, impurities, and crystal defects in the host-crystal lattice. Here is what you need to know about how a hostcrystal Raman spectrum is affected by dopants and impurities.