An optical system uses a birefringent medium disposed within an optical cavity, receives an input beam that may be non-coherent or coherent, and produces a randomization energy from the input beam, by creating birefringent induced beam subdivisions each cavity traversal, where after a threshold number of beam traversals have occurred, a randomized energy distribution is created. That randomized energy distribution is read by a photodetector and converted into a random number by a randomization processing device.