Abstract
Spectra of the vibrations of adsorbed molecules contain information about the species present and their local chemical environment. Tunable lead-salt diode lasers can be used to obtain such spectra. Both electroreflectance vibrational spectroscopy (EVS) and polarization modulation IR spectroscopy (PS) were used to obtain spectra covering the 1800-2160-cm−1 range. Since each technique was used with the same sample and optical system, a direct sensitivity comparison is meaningful.
© 1988 Optical Society of America
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