Apparatus for imparting phase shift to input waveform

摘要

There is set forth in one embodiment an apparatus and method for imparting a phase shift to an input waveform for output of a converted waveform. In one embodiment, a phase shift can be provided by four wave mixing of an input waveform and a pump pulse. In one embodiment, there is set forth an apparatus and method for generating a high resolution time domain representation of an input waveform comprising: dispersing the input waveform to generate a dispersed input waveform; subjecting the dispersed input waveform to four wave mixing by combining the dispersed input waveform with a dispersed pump pulse to generate a converted waveform; and presenting the converted waveform to a detector unit. In one embodiment a detector unit can include a spectrometer (spectrum analyzer) for recording of the converted waveform and output of a record representing the input waveform.

主权项

1. An apparatus comprising:
a first dispersive element through which an input waveform propagates; an optical element for outputting an output waveform; and a pump pulse input unit for input of a pump pulse into the optical element, the pump pulse input unit being coupled to the optical element, the pump pulse input unit having a second dispersive element through which the pump pulse propagates; wherein the optical element and the pump pulse input unit define a temporal lens, wherein each of the first dispersive element and the pump pulse input unit are coupled to the optical element; wherein the first dispersive element and the second dispersive element are configured so that a dispersion of the first dispersive element is matched with a dispersion of the second dispersive element; wherein the apparatus is configured so that the input waveform and the pump pulse are combined by four wave mixing at the optical element, so that the output waveform is phase shifted relative to the input waveform.