UEC Tokyo enjoys international prestige in Optical Science, particularly in the areas of Laser Source Innovation, Cold Atoms, Frequency Synthesis, Quantum Optics, and High Intensity Laser. For instance, it’s the birth place of the ceramic laser. The pioneering work of laser cooling and trapping of metastable Ne atoms done here in 1988 led on to numerous recent works on ultracold atoms, including atom holography and Bose-Einstein Condensation. The Optical Science group has grown, and presently consists of members from the Institute for Laser Science, Department of Engineering Science, and Center for Photonic Innovations. It continues to be innovative and to explore new frontiers. Some recent highlights include Fiber-based quantum interface using tapered nanofibers, frequency-correlated photon pairs, an optical synthesizer, attosecond pulse generation, and analysis of attosecond phenomena. http://www.uec.ac.jp/eng