Div_beam_DMI

This dataset contains a Gaussian beam model developed for designing and validating a test setup for the publication:

“Increasing Angle Acceptance in Displacement Measuring Interferometers by Means of a Diverging Laser Beam”. In addition, the dataset includes experimental measurement data and signal processing code used to quantify the performance of the test setup. The project was conducted at the Eindhoven University of Technology for the the MSc project of Lowe Blom as part of Kevin Looman’s PhD research on increased angle acceptance in displacement measuring interferometers.

Objective:

Design an angle robust displacement measuring interferometer.

Type of research:

Conceptual work on design principles for an angle robust diverging beam interferometer. Modelling of a Gaussian Beam propagation model to theoretically validate the working principle and design and quantification of a demonstrator.

Method of data collection:

The target mirror is placed at discrete distances and rotations within the measurement stroke of the interferometer. The target mirror is then displaced at a constant velocity for 2 wavelengths and the resulting voltage produced by the interference pattern on a photodiode is measured and used for quantification of the demonstrator.

Data type:

Matlab code and data files (.m and .mat)

Data collection period:

February 2024 – December 2025

Software used:

MATLAB R2023b and R2025b