High-intensity super-radiance pulses generated by an active medium placed in a two-dimensional Bragg structure

The possibility is shown of using two-dimensional Bragg structures for generating short super-radiance (SR) pulses of high intensity. The structures provide spatial synchronisation of the radiation in two orthogonal directions in the active medium with large Fresnel parameters. In contrast to the SR effects without Bragg structure, an efficient generation of SR arises in an active medium with the dimensions not exceeding the inverse increment with the intensity by several orders of magnitude greater than the SR intensity of the same medium in a free space. (nonlinear optical phenomena)