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Building a Thin Film GaN-based High Resolution Flash Scanning 3D Light Detection and Imaging (LiDAR) System

Presenters Name: 
Khin Kyaw
Co Presenters Name: 
Primary Research Mentor: 
Kyusang Lee
Secondary Research Mentor: 
Minseong Park
9:30 - 10:15
Time of Presentation: 
2019 - 9:30am to 10:15am
Newcomb Hall Ballroom
Presentation Type: 
Presentations Academic Category: 
Grant Program Recipient: 
USOAR Program

LiDAR is a promising candidate for object detection and three-dimensional imaging. A LiDAR emitter utilizes a near-infrared (NIR) high frequency laser which provides higher resolution and faster implementation of three-dimensional point clouds than other conventional ranging systems. Therefore, it can quickly construct a three-dimensional map of its surroundings, this superiority has a great potential for self-driving vehicles. However, many LiDAR systems have problems with mechanical scanning because the system itself is too bulky and noisy. Without the moving part, a solid-state LiDAR system has higher stability, and faster scanning speed than a conventional system. The three main components of LiDAR are the scanner, transmitter, and receiver. Our LiDAR system involves fabricating all components, except the scanner. This simple, non-bulky structure is expected to reduce noise and improve accuracy. The receiver component is a PIN photodiode and the transmitter is a pulsed 905 nm laser (or LED) diode. The transistor component is made with a GaN high electron mobility transistor (HEMT). GaN HEMT is unique because it provides high power for the device, low resistivity, and operates at a high speed. The goal is to implement an integrated LiDAR system, with the fabricated parts and with a commercialized micro-controller. A possible integration technique is by using a time of flight ranging sensor, such as the FPGA board or a Texas Instrument LiDAR module. Integrating this system to the fabricated LiDAR parts will result in accurate time readings a will simultaneously enable accurate testing of the fabricated components of the LiDAR system.