Dr. Ki Hean Kim received the Ph.D. degree in Mechanical Engineering from Massachusetts Institute of Technology, Cambridge, MA, USA in 2005. He is currently an associate professor of Mechanical Engineering at Pohang University of Science and Technology (POSTECH). Prior to the faculty position at the POSTECH, he was a postdoctoral research fellow at the Wellman Center for Photomedicine, Massachusetts General Hospital/Harvard Medical School, Boston, MA, from 2005 to 2008. His research interest is to develop novel optical systems for challenges in medicine and biology. His specialty is optical tissue imaging techniques, including 3D fluorescence microscopy and optical coherence tomography. Dr. Kim serves as a Topical Editor of Current Optics and Photonics, and an Editorial Board Member of Photonics and Translational Biophotonics.