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Proceedings Paper

Generation of focused electron beam and x-rays by pyroelectric and photogalvanic crystals
Author(s): N. Kukhtarev; T. Kukhtareva; M. Bayssie; J. Wang; J. D. Brownridge; V. Rotaru
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Paper 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.

Paper Details

Date Published: 6 December 2006
PDF: 10 pages
Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230G (6 December 2006); doi: 10.1117/12.648199
Show Author Affiliations
N. Kukhtarev, Alabama A&M Univ. (United States)
T. Kukhtareva, Alabama A&M Univ. (United States)
M. Bayssie, Alabama A&M Univ. (United States)
J. Wang, Alabama A&M Univ. (United States)
J. D. Brownridge, State Univ. of New York at Binghamton (United States)
V. Rotaru, Moldova State Univ. (Moldova)

Published in SPIE Proceedings Vol. 6023:
Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals
Gertruda V. Klimusheva; Andrey Iljin; Sergey Al. Kostyukevych, Editor(s)

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