Three-dimensional mapping of polarization profiles with thermal pulses

Axel Mellinger, Rajeev Singh, Michael Wegener, Werner Wirges, Reimund Gerhard-Multhaupt, Sidney B. Lang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


High-resolution, large-area three-dimensional mapping of polarization profiles in electret polymers was carried out by means of a fast thermal pulse technique with a focused laser beam. A lateral resolution of 38 μm and a near-surface depth resolution of less than 0.5 μm was achieved. At larger depths, fast thermal diffusion in the metal electrode rather than the laser spot size becomes the limiting factor for the lateral resolution.

Original languageEnglish
Article number082903
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number8
StatePublished - Feb 21 2005


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