Loading...
Bringing optical super-resolution metrology into advanced manufacturing
Cottrell, Seth T.
Cottrell, Seth T.
Citations
Altmetric:
Advisor
Editor
Date
Date Issued
2023
Date Submitted
Keywords
Collections
Research Projects
Organizational Units
Journal Issue
Embargo Expires
Abstract
Spatial Frequency Modulated Imaging (SPIFI) is a method of structured light imaging. The method to modulate the light is a temporally-varying sweep through a linear set of supported frequencies. In this dissertation I present a method to increase the speed of modulation. This increases the line image creation speed. I demonstrate this method by creating line images 10 times faster than current methods, and discuss the feasibility of creating line images 1,000 times faster than current methods with commercially available scan mirrors. The high-speed SPIFI system is benchmarked for resolution and used to image in an Additive Manufacturing (AM) environment.
Next I introduce a method to modulate the entire spatial field at once. This single-shot SPIFI technique spatially modulates a broadband source by wavelength. Single-shot SPIFI enables modulation at the pulse duration of the source and at the repetition rate of the source. I demonstrate the technique using a single 30 femtosecond pulse.
Associated Publications
Rights
Copyright of the original work is retained by the author.