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The Edge Electric Field of a Pyroelectric and its Applications

V. Sandomirsky·Y. Schlesinger·R. Levin
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Abstract

Following a change of temperature of a pyroelectric (PE), a depolarizing electric field appears both inside the PE, as well as outside its edges, the edge depolarizing electric field (EDEF). The EDEF extends outwards up to a distance of the order of magnitude of the PE width. The mapping and the strength of the EDEF have been calculated and analyzed for the case of a semi-infinite pyroelectric plate. This strong EDEF (104-105 V/cm), when penetrating into the surrounding medium, creates a variety of physical effects: inducing electrical current in a semiconductor and affecting its resistance, accelerating charged and neutral particles in vacuum or in a gas, generating electromagnetic waves, modifying optical characteristics by electrooptical and photoelasic effects, generating piezoelectric deformation and more. We show that these EDEF induced effects could serve as a basis for the development of various applications and devices.

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V. Sandomirsky, Y. Schlesinger, R. Levin. 2006-07-23. The Edge Electric Field of a Pyroelectric and its Applications. https://doi.org/10.1063/1.2399306

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