Design of a deep sea LiDAR system: Laser Pulse transmission

Current subsea LiDAR implementations are inherently depth limited, and make LiDAR applications in the deep-sea costly. To this end, the SLiDAR project aims to develop a pressure tolerant LiDAR system for use at any ocean depth. This thesis elaborates the design and implementation of the laser pulse transmission of the LiDAR and the circuit which will supply the bias voltage for the Avalanche photodiode (APD) from the receiving stage. Although testing of the transmission stage showed the laser can be pulsed, there can be more optimizations done in the future as better laser system can be designed to achieve higher optical output power and an even smaller pulse width. Furthermore,future optimizations should be considered for the APD bias circuit. Unfortunately, the LiDAR system as a whole was not tested in practise, due to time limitations. Hence, this thesis aims to provide a basis for future development, testing and verification of both the LiDAR system and its laser pulse transmission stage.SLiDARElectrical Engineerin