Holographic ring patterns are generated by a single beam (Ar+ laser) incident onto a polymer-dispersed liquid crystal (PDLC) film. The incident laser beam initially acts as a writing beam, and then induces 'point' light sources due to micron-sized particles in the film. Interference between the incident beam and the induced 'point' light sources then produces holographic ring patterns, which are permanently recorded in situ on the film. After recording, the incident beam becomes a reference beam and reconstructs the 'point' source wavefronts. The interference amongst these reconstructed 'point' light sources produces a Quetelet-type scattering ring in a screen placed behind the PDLC film.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering