We study light-induced perturbations and nonlinear waveforms of laser light and white light in photochemical systems. Our work is distinctive because it focuses on chemical reactions, which offer molecular-level control over the macroscopic optical response of the medium, for example through changes in refractive index.
By combining photochemistry and optics, we devise new strategies to address a principal goal of photonics research – to precisely control and manipulate light beams propagating in 3-D microstructures.
We develop routes to 2-D, 3-D optical and microstructural lattices through mechanisms that marry the elegant spontaneity of self-organisation to the precision and directionality of directed-beam lithography. Unlike any other known self-organised structures, the resulting lattices are composed of multimode, polychromatic cylindrical polymer waveguides.