Figure 2. Diagram of a four-mode intensity interferometer: , , , are input beams of light; and are phases of delay of light beams. The detectors and coincidence circuit measure the correlation of intensities

From

An Analogy Between the Properties of Light and Properties of Vortex-Wave Process in the Medium Similar to Superfluid 3Не-В

Liudmila B. Boldyreva

International Journal of Physics. 2015, 3(2), 74-83 doi:10.12691/ijp-3-2-5