Seunghyun (Jacob) Lee, University of Texas at Arlington, Arlington, TX
The increasing demands in the imaging and sensing industries require sophisticated systems capable of precise data acquisition. infrared (IR) optoelectronic devices are at the core of these advancements. My research significantly advances the field of IR optoelectronics through an integrated design approach, combining advanced epitaxial growth, heterostructure design, and bandgap engineering techniques. This presentation will specifically focus on the development of IR avalanche photodiodes (APDs), which are essential for the receiver part of optoelectronic systems. These devices provide internal gain and high-speed operation, enhancing the performance of photonic systems in diverse environments. The device architectures for APDs that I will discuss have been tailored for eye-safe LiDAR and greenhouse gas sensing applications. This talk will discuss the technological innovations in APD development that enhance their performance beyond the current state-of-the-art APD technologies.