Surface Infrared Reflection-Absorption Spectroscopy Using a Tunable Diode Laser.
NAVAL RESEARCH LAB WASHINGTON DC
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Single-reflection infrared reflection-absorption spectra IRRAS of adsorbates on surfaces have been obtained using a tunable diode laser radiation source. Surface sensitivity is achieved through the use of polarization modulation, and the high brightness of the laser light source has made possible the observation of vibrational modes at energies much lower than those accessible with conventional blackbody sources. Results are presented for the chemisorption of oxygen on polycrystalline aluminum showing surface 580cm and subsurface 890cm Al-O stretching modes at sub-monolayer coverage. Author
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy