I was sent a link today to an interesting article about some research done at the University of Central Florida. Researchers have concocted a class of optical beams which appear to follow a curved trajectory in free space propagation. A theoretical picture of the behavior of such a light field on propagation is shown below:

The horizontal axis represents the transverse profile of the beam, while the vertical axis represents the propagation direction. Lighter colors, of course, indicate a brighter field. As one can see, the brightest beam in the wavefield, as well as all the secondary ones to its left, are curving to the right as they propagate!



