| 摘要 |
In a method for influencing and measuring pulsed electromagnetic illumination, e.g. parallel laser light (L), said illumination or light can be spatially divided, in particular, in an autocorrelator comprising a beam receptor (12), can be recombined behind said beam receptor by a superposition or focusing device (18 or 58) and can be detected in the recombinant area by a detector (20). As the transmission system (52), the beam receptor comprises beam profile dividers in a penetrable housing (50), in the form of at least two transmission parts (54; 56), with or in which separate, preferably parallel component beams (S, T) can be modified in their time-based beam characteristics, before being recombined. The inventive beam receptor (12) preferably has at least a two-part mirror (22), plate (32), chamber or crystal system (42) comprising a beam profile divider (14, 24, 34, 44) which creates or leaves unchanged a base component beam (S), whilst the time-based characteristics of this or every other component beam (T) in a neighbouring beam profile divider (16, 26, 36, 46) can be controlled in a different manner, in order to effect, in particular, reflection or transmission delays and/or changes to the optical paths. |
