Discussion of the Schwarz-Hora Effect

Abstract

In the Schwarz-Hora effect, an electron beam passing through a crystal is modulated by laser light and then reproduces the light when it strikes a nonluminescent target. In this paper, the theory for the modulation process is developed using Born approximation to second order. A mechanism for light production at a nonresonant target is also discussed.

Modulation of electron waves by means of a laser

“…No pattern whatsoever was visible to the naked eye when this screen was substituted for the fluorescent one even with the laser on. A new screen 2 • • was fashioned in a similar way using large 1 cm slices of single cry stal Al^O^. Again negative results were obtained.…”

A theoretical treatment of the Schwarz-Hora effect

“…These ambiguities have proven frustrating to experimentalists who, after designing and building an apparatus to duplicate Schwarz's experi ment, find out they haven't duplicated his electron optics. Further doubts have arisen as a result of calculations done by several authors (6,2) who predict much lower output intensities than Schwarz claims to have produced. These comments all typlify the air of mystery which has surrounded the Schwarz-Hora Effect from the time the first paper was published right up until the present (April 1972).…”