Abstract

The statistical properties of a three-dimensional laser speckle field produced by three scattered waves superposed with one another are studied theoretically. It is shown that the spatial anisotropy of intensity distributions still remains even when the three speckle fields are interfered with one another. Superposed fractal speckles and their binarized intensity are also investigated in terms of spatial self-similarity. A new method for fabricating random laser media with the use of photopolymers is proposed, and a preliminary experiment is performed.

© 2004 Optical Society of America