Publication
Applied Physics Letters
Paper

Flexural resonant samples for submonolayer measurements of oxygen on Si surfaces

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Abstract

Photothermal deformation measures optical energy absorption by thermal expansion of a solid. This work describes how deflection amplitude is increased by a factor of 104 by mechanically resonating thin bars in a flexural mode of vibration. Small (∼10-5-5×10-3 fractional) infrared optical absorptions from Si:O surfaces are reported in various reactive gases using a tunable CO2 drive laser. Alternately, conventional low-power light sources can be used to provide sufficient excitations for submonolayer infrared absorption measurements.

Date

01 Dec 1991

Publication

Applied Physics Letters

Authors

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