21 July 2020, 10:30 - 11:30 EasternTime
Lithium niobate (LN), the workhorse of optoelectronics, is an excellent photonic material with large electro-optic coefficient, Kerr nonlinearity and piezoelectric response, and a wide optical transparency window. Recent advances in nanofabrication technology has allowed for the realization of ultra-low loss LN waveguides, and is opening up exciting opportunities for next-generation nonlinear photonic technologies with higher integration density and advanced functionalities. In this talk, I will review our recent developments of thin-film LN devices, including optical frequency shifting, acousto-optic control, and optical frequency comb generation based on the electro-optic effect, Kerr effect, and supercontinuum. In addition, I will discuss the potential of LN platform for applications in nonlinear frequency conversion, frequency metrology, microwave photonics and precision spectroscopy.
Mengjie Yu is a postdoctoral fellow in Professor Marko Loncar’s group in the John A. Paulson School of Engineering and Applied Sciences at Harvard University. She received her B.S. degree in Optical Engineering in 2012 from Zhejiang University and her Ph.D. degree in Electrical Engineering in 2018 from Cornell University in Professor Alexander L. Gaeta’s group. Her research focuses on integrated optics across various platforms of silicon, silicon nitride, and lithium niobate, and her research areas include optical frequency comb generation in photonic waveguides and microresonators, mid-infrared molecular spectroscopy, nonlinear frequency conversion and coherent computing based on degenerate optical parametric oscillation.
Mengjie Yu is the 2020 OSA Ambassador of the Optical Society. She is the winner of the 2016 Maiman Student Paper Competition and the 2016 Emil Wolf Student Paper Competition. She is also a semi-finalist of the 2017 Tingye Li Innovation Prize and a finalist of the 2020 Tingye Li Innovation Prize. She is Caltech 2019’s Young Investigator Lecturer. She is selected as the Rising Stars Women in Engineering in the Asian Deans Forum 2019. She has published more than 32 peer-reviewed journal papers and 44 conference papers and is a referee for 15 peer-reviewed journals. Currently, she is serving as chair of the OSA Integrated Optics Technical Group.