Our research group has several main areas of exploration, including ultrafast nonlinear spectroscopy, electronic-photonic integrated circuits, integrated fiber lasers at GHz repetition rate, and femtosecond frequency combs and applications. Currently the group’s main focus is on devices operating at optical C-band range (1530-1565nm). The group has expertise in designing and testing Saturable Bragg Reflectors (SBRs); integrated GHz repetition rate mode-locked fiber lasers with femtosecond pulse-widths; single and multi-channel add-drop microring resonator filterbanks, photonic crystal microcavities, optical switches, and various advanced microphotonic systems. In addition, the group has extensive expertise in time-resolved ultrafast nonlinear spectroscopy, and its application in nonlinear optical characterization, as well as for studies of carrier dynamics in semiconductors.
GHz Repetition Rate Femtosecond Fiber Lasers
Time-Resolved Nonlinear Spectroscopy
Electronic-Photonic Integrated Circuits
The group is led by Dr. Kyung-Han Hong, Professor Erich P. Ippen, and Professor Franz X. Kaertner