  After more than 70 years of development, holography has become an essential
tool of modern optics in many applications. In fact, for various applications
of different kinds of holographic techniques, stability and antijamming ability
are very important. Here, optical topological structures are introduced into
holographic technology, and an entirely new concept of optical topological
holography is demonstrated to solve stability and antijamming problems. Based
on the optical knots and links, the topological holography is not only
developed in theory, but also demonstrated experimentally. In addition, a new
topological holographic coding is established by regarding each knotted/linked
topological structure as an information carrier. Due to the variety of knotted
and linked structures and their characteristics of topological protection, such
coding can have high capacity as well as robust properties. Furthermore, with
writing the hologram into the liquid crystal, robust information storage of 3D
topological holography is realized.
