Generation of focused electron beam and x-rays by pyroelectric and photogalvanic crystals

N. Kukhtarev; T. Kukhtareva; M. Bayssie; J. Wang; J. D. Brownridge; V. Rotaru

doi:10.1117/12.648199

6 December 2006 Generation of focused electron beam and x-rays by pyroelectric and photogalvanic crystals

N. Kukhtarev, T. Kukhtareva, M. Bayssie, J. Wang, J. D. Brownridge, V. Rotaru

Proceedings Volume 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals; 60230G (2006) https://doi.org/10.1117/12.648199
Event: Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 2005, Alushta, Ukraine

Abstract

We have developed a model to explain the phenomena of electron focusing by pyroelectric and photogalvanic crystals. The pyroelectric crystals used to compare experiments with theory were Fe doped and un-doped LiNb0₃. The crystals were either heated from the +z end or illuminated with a laser (to test photogalvanic effect). Heating the crystals by passing a current through a resistor attached to the +z end produced the pyroelectric effect: a change in polarization in response to a change in temperature. Illuminated with a CW solid-state diode pumped laser (532 nm, 100 mW) produces the photogalvanic effect: the build up of charge on the polar surfaces of the crystal. In both cases the polar ends of the crystal becomes electrically charged and produced self-focusing electron beams that were imaged on a ZnS screen. Using different targets we have produced x-rays, and demonstrated x-ray imaging of metal masks.

Citation Download Citation

N. Kukhtarev, T. Kukhtareva, M. Bayssie, J. Wang, J. D. Brownridge, and V. Rotaru "Generation of focused electron beam and x-rays by pyroelectric and photogalvanic crystals", Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230G (6 December 2006); https://doi.org/10.1117/12.648199

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