PRESENTATION

Aluminum Nitride Photonic Integrated Circuits for Extending Nonlinear Photonics Applications to UV Spectrum

Aluminum nitride (AlN) has emerged as a promising photonic material mainly due to its broad transparency window and remarkable nonlinear optical properties. Recently, we have developed low-loss photonic integrated circuits (PICs) based on an AlN-on-sapphire platform that enables various on-chip nonlinear photonic processes such as second harmonic generation (SHG), frequency conversion, and electro-optic modulation which are scalable from the infrared to the visible/ultraviolet (UV) part of the spectrum. As an eminent example, this work will discuss our recent progress on solid-state far-UVC emitters based on our AlN PICs via SHG. With further heterogeneous integration of GaN pump lasers, our AlN PICs can offer tremendous reduction in cost, size, weight, and power (C-SWaP), which shows great potential for numerous applications ranging from human-safe germicidal disinfection and water purification to spectroscopy, frequency metrology, and quantum computing and sensing.