Abstract

Polarization modulation has been combined with Fourier transform infrared (FT-IR) spectroscopy to yield a sensitive method for obtaining infrared reflection-absorption spectra of monolayer films adsorbed on low-area metal surfaces. A 10-Å film of cellulose acetate adsorbed on a polished copper coupon was examined and the results compared with spectra obtained on the same instrument without polarization modulation. The signal-to-noise ratio is significantly better with the polarization modulation approach. The new method has the additional advantage of being sensitive only to molecules adsorbed on the surface. IR absorption by background gases is not detected.

Diode laser spectroscopy of adsorbed gas on metal surfaces

David K. Lambert
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Laser diagnostics of adsorbed particles by resonance magnetic rotation

I. M. Beterov and V. P. Chebotayev
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Calibration improvement of Fourier transform infrared phase-modulated ellipsometry

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Automatic Ellipsometer with High Sensitivity and Special Advantages for Infrared Spectroscopy of Adsorbed Species

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Fourier transform infrared spectrometers: their recent history, current status, and commercial future

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