Reviving the LISA pathfinder’s Real time phasemeter and algorithmic estimation for LASSO
Project Overview
This project focused on restoring and extending a LISA Pathfinder–inspired laser testing platform used within the Laboratory of Space Systems and Optomechanics (LASSO). The system supports precision phase measurement, timing-sensitive triggering, and future interferometric testing relevant to space-based metrology.
My Role
I managed the optical subsystem design, FPGA-based filtering and timing logic, and experimental validation of optical components within the revived LISA Pathfinder testbed. I restored system functionality, enhanced signal integrity, and validated performance through iterative testing and measurement.
I worked on restoring reliable, computer-controlled camera triggering within an FPGA-based Red Pitaya system. The system exhibited multiple timing and communication failures, including incorrect delay values from the PC, broken rising-edge detection ahead of the delay block, and trigger instability when combining user input with programmable delays.
By analyzing the timing path and restructuring the trigger logic, the system was stabilized and its performance improved. These changes increased the achievable frame rate from roughly 30 FPS to 125 FPS, enabling consistent high-speed operation.