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Rochester set-up
Diagram of the experimental setup for the delay of transverse images. Light pulses of 2 ns duration are incident on a 50:50 beamsplitter. The transmitted pulses then pass through an amplitude mask and a 4f imaging system. The transmitted and reflected pulses are recombined at another 50:50 beam-splitter. The transmitted part traverses a path approximately 1.5 m shorter than the reflected path, and arrives at the second beamsplitter about 5 ns sooner than the reflected pulse, preventing interference between the two pulses. Credit: University of Rochester
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