From Nonlinear Optical Imaging to Pulse Oximeters

Hannah Lanford

The PROBE Lab of Optica Fellow Kimani Toussaint Jr. leverages interdisciplinary expertise to tackle wide-ranging problems.

BrainPh.D. students Rutendo Jakachira (left) and Jieliyue Sun at work in the PROBE lab. [J. Burrow]

When the COVID-19 pandemic hit, many regular activities ground to a halt as schools and businesses closed. For some researchers and engineers, however, the pandemic also provided inspiration to take on new problems. Optica Fellow Kimani C. Toussaint Jr., professor and senior associate dean for research and strategic innovations in the school of engineering at Brown University, USA, and his Laboratory for Photonics Research of Bio/nano Environments (PROBE Lab), became particularly intrigued by the inequities in health care that COVID-19 was bringing to the fore.

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