Research Topics

As one of the fundamental strategies in field tracing, an optical system is divided into regions which can be modeled with a specialized regional solver, and then the interconnection of all regions delivers the solution to the complete system.

Fourier transform, as one of the most influential mathematical method in various scientific fields, plays an indispensable role in computational optics. It is a key technology that connects different modeling domains in field tracing ...

Gratings as well as other micro- and nanostructures are shown to be of great importance in modern optics. In field tracing, the rigorous Fourier modal method (FMM), also known as the rigorous coupled wave analysis (RCWA), is employed as a rigorous regional solver for grating simulation. ...

To solve the scattering at a spherical object, it is more efficient to contemplate the problem in spherical coordinates, so that the vectorial spherical harmonics (VSH) can then be found as the solution to Maxwell's equations. ...

Optical media with gradually changing refractive index are commonly found in practical optical systems. The thermal effects either weak or strong are present in almost all cases. The non-negligible thermal usually give rise to a modulation of the refractive index, which functions as a graded-index (GRIN) medium. ...

Crystals are of great help for people to discover the vectorial nature of light, due to their birefringent properties with respect to the different polarization of light. ...

In systematical design thinking, the logic from functional design to structure design is followed. For the design tasks in homeomorphic zones, the optical behavior of the element can be considered as a local modulation of the input field, shaping the phase and redistributing the irradiance. ...

A fully vectorial physical optics modeling of (both real and ideal) lens systems can be formulated via field tracing.  ...

The optical design and analysis of micro-structured optical elements with high index contrasts and large numerical apertures is still challenging.