Coherent Transient Optical Processing
The output signal represents a convolution of E3(t) with the cross-correlation of E1(t) and E2(t).
Y. S. Bai, W. R. Babbitt, N. W. Carlson, and T. W. Mossberg, "Real-Time Optical Waveform Convolver/Cross Correlator," App. Phys. Lett. 45, 714 (1984).