Laura A. Waller

I am currently a member of the 3D Optical Systems Group at MIT, led by Prof. George Barbastathis. My research interests are in complex-field (phase and amplitude) imaging and tomography, digital holography, 3D imaging and computational imaging techniques. I am a Singapore-MIT Alliance for Research and Technology (SMART) student, meaning I spend a few months a year doing research in Singapore. Here are a few of the projects I have worked on:

Research

A technique inspired by Transport of Intensity (TIE) imaging, we obtain phase from a single color image using partially coherent illumination, by quantifying the color dispersion through the imaging system.

Phase from chromatic aberrations

We propose a method for extending the TIE technique to longer distances and multiple images by measuring and correcting for higher order nonlinearities.

Transport of Intensity imaging with

higher order derivatives

We use TIE imaging techniques to obtain phase information from a single captured image in a Volume Holographic Microscope (VHM).

 

Quantitative phase imaging in a

Volume Holographic Microscope

We monitor 2D changes in water content of a Proton Exchange Membrane (PEM) fuel cell system in-situ in order to enable more efficient fuel cell technologies.

Two-angle phase tomography of fuel cell

water content

By phase-shifting Mach-Zehnder interferometry with a rotation stage, we obtain 3D phase and amplitude distributions of complex objects and study the system errors.

Complex-field tomography