Degrees:

B.S., Physical Electronics (1987)
Xi'an Jiaotong University

M.S., Optics (1993)
Institute of Optics & Electronics, Chinese Academy of Science

Ph.D., Optical Engineering (1999)
Beijing Institute of Technology

Research Interests:

My research interests mainly focus on adaptive optics (AO). While in China, I performed research on AO projects for astronomical applications. I worked on developing a low-light level Hartmann-Shack wavefront sensor to be used with a laser guide star, and a high frame-rate Hartmann-Shack wavefront sensor for measuring the optical effects of atmospheric turbulence. For my Ph.D. thesis, I optimized our astronomical AO system to provide our system with the flexibility of measuring multiple targets through different atmospheric conditions. I helped to determine several required parameters and components for the AO system, such as the number of required subapertures in our wavefront sensor, and the required CCD frame rates and system bandwidth for our instrument.

In September 1999, I joined David Williams' lab as a postdoctoral research associate. Here I am working on adaptive wavefront correction for imaging the retina and improving visual performance. I have also been involved in the development of a test-bed for measuring and characterizing the performance of alternative AO technologies, such as MEMS and spatial light modulators.

Selected Publications

Chen L., Kruger P., Hofer H., Singer B. & Williams D.R. (2006). Accommodation with higher order monochromatic aberrations corrected with adaptive optics. Journal of the Optical Society of America A, 23(1), 1-8.

Chen L., Singer B., Guirao A., Porter J., & Williams D.R. (2005). Image metric for predicting subjective image quality. Optometry and Vision Science, 82(5), 358-369.

Artal P., Chen L., Fernández E., Singer B., Manzanera S., & Williams D.R. (2004). Neural adaptation for the eye's optical aberrations. Journal of Vision, 4, 281-287.

Doble N., Yoon G., Chen L., Bierden P., Singer B., Olivier S., & Williams D.R. (2002). Use of a microelectromechanical (MEMS) mirror for adaptive optics in the human eye. Optics letters, 27(17), 1537-1539.

Hofer H., Chen L., Yoon G., Singer B., Yumauchi Y., & Williams D.R. (2001). Improvement in retinal image quality with dynamic correction of the eye's aberration. Optics Express, 8(11), 631.

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