Virtual Optical Experiments for Macroscopic Light Scattering Problems Snow H. Tseng 曾雪峰 Graduate Institute of Photonics and Optoelectronics National Taiwan University 台大光電所 Dec. 15th, 2007 Thank you very much for giving me the opportunity to share with you of my research today, The title my talk is … My name is Snow Tseng,

Fluorescence Spectroscopy Light Scattering Fluorescence Spectroscopy Phase Conjugate Mirror LED Enhanced Backscattering Photonic Crystals LCD display Diffuse Spectroscopy PSTD Suite Today, tissue optics is a very hot field with many new techniques being developed. However, most research attempts are based on heuristic approximations, simply because a rigorous solution Based on fundamental electromagnetic principles was not available, I am presenting here the PSTD suite, capable of solving Maxwell’s equations for a large-scale light scattering problem by biological random media. In my presentation, I will talk about the development of the PSTD suite (which took approximately two years to develop from scratch), and also talk about some research findings of specific projects. OCT fundamental electromagnetic theory: Maxwell’s Equations

Pseudospectral Time-domain Method Grid-based simulation tool Numerical realization of the Maxwell’s equations for arbitrary, macroscopic geometries Virtual experiment with controllable variables in a noise-less environment Today, the research tool I have presented opens up a whole new horizon for the research of tissue optics. By rigorously solving Maxwell’s equations, for the first time, tissue optics can be studied based upon fundamental electromagnetic theory, without heuristic approximations. Arbitrary Geometry

Research Projects Simulating of a virtual tissue model Extracting microscopic information from macroscopic scattered light Analyzing a phase conjugate mirror Today, the research tool I have presented opens up a whole new horizon for the research of tissue optics. By rigorously solving Maxwell’s equations, for the first time, tissue optics can be studied based upon fundamental electromagnetic theory, without heuristic approximations.

Virtual Tissue Model Determining the Microscopic Origin of Macroscopic Scattered Light

Comparing Monte Carlo and PSTD Simulations of Light Scattering Applied Physics Letters, 2007. 91(051114), DOI: 10.1063/1.2767777

Simulating a Phase Conjugate Mirror

Simulating a Phase Conjugate Mirror Opt. Express 15, 16005-16016, 2007