Thermophotonic radar imaging: An emissivity-normalized modality with advantages over phase lock-in thermography

Nima Tabatabaei, Andreas Mandelis, Bennett T. Amaechi

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

One major problem of frequency-domain photothermal radiometry, or alternatively in two-dimensional lock-in thermography, is the compromise one has to make between dynamic range (probing depth) and depth resolution. The thermal-wave radar incorporates chirped excitation through matched filtering to maintain good resolution and depth range inside a sample. This letter experimentally demonstrates the advantages of chirped modulation and introduces a thermophotonic modality of thermal-wave radar based on an emissivity- normalized, higher-dynamic-range contrast parameter known as cross-correlation phase. Finally, comparisons made on a biological (dental) sample show potential applications of the method.

Original languageEnglish (US)
Article number163706
JournalApplied Physics Letters
Volume98
Issue number16
DOIs
StatePublished - Apr 18 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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