  We present an optical element for the separation of superimposed beams which
only differ in angle. The beams are angularly resolved and separated by total
internal reflection at an air gap between two prisms. As a showcase
application, we demonstrate the separation of superimposed beams of different
diffraction orders directly behind acousto-optic modulators for an operating
wavelength of 800nm. The wavelength as well as the component size can easily be
adapted to meet the requirements of a wide variety of applications. The
presented optical element allows to reduce the lengths of beam paths and thus
to decrease laser system size and complexity.
