Abstract
We consider the reflection of electrons by an infinitely high potential wall in the presence of a bichromatic laser field having two components of frequency omega and 2 omega . Both components are out of phase by an angle phi . We evaluate the induced and inverse bremsstrahlung for this elementary scattering process and we discuss the coherent phase-control of the non-linear currents j(n; phi ) of electron reflection. If E0 is the initial electron energy and h(cross) omega the photon energy, two specific cases will be of interest: (a) E0>>h(cross) omega and (b) E0>or approximately=h(cross) omega , where in the latter case off-shell effects are particularly relevant. We shall relate our findings to the corresponding scattering of electrons by a hard sphere in a bichromatic field.
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