Pulsed Photothermal Radiometry for Remote Sensing of Spectroscopic and Physical Properties of Thin Film
IBM RESEARCH LAB SAN JOSE CA
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Photothermal Radiometry PTR is a sensitive technique for noncontact spectroscopy and inspection a modulated beam of photons or other particles is used to produce temperature transients, and the corresponding transients in the infrared thermal radiation emitted form the sample are analyzed. This paper describes the recent experimental and theoretical developments of pulsed PTR PPTR with back-scattering detection. PPTR is useful for many types of noncontact measurements, including absolute absorption spectroscopy, excitation spectroscopy, and the monitoring of thickness layered structure, thermal contacts, and associated properties. Further more, these measurements can be made on difficult samples like opaque materials, powders, aerosols, gels, skin in-vivo, and so on.
- Test Facilities, Equipment and Methods