Two laser spectroscopy techniques for adsorbate vibrational spectroscopy are discussed: electroreflectance vibrational spectroscopy (EVS) and polarization-modulated IR reflection absorption spectroscopy (PS). Both techniques were used to obtain quantitative spectra of CO on Ni(100). The sensitivity of EVS is greater, but the two techniques provide complementary information. Chemical applications are given.
David K Lambert, David K Lambert,
"Laser Observation Of An Adsorbate's Vibrational Line Strength And Stark Tuning Rate", Proc. SPIE 1056, Photochemistry in Thin Films, (15 August 1989); doi: 10.1117/12.951613; https://doi.org/10.1117/12.951613