Thanks for the insights, I will need to go read up how FTIR works and see how can I apply it to measure group delay. Hopefully I can find one at the material science department.
Thanks for the link :smile: I have been though the place and looked at the reference papers. The paper describes what modification they did to the experiment and the results, but there wasnt much mentioned about how they actually did the experiment and processed the data from the interferogram...
I am using a white light interferometer to do the measurement. I seen from the papers that there are many variations to the experiment that confuses me. (Some have used Fourier transform, some used tunable filter etc)
What would be a good way to measure the group delay from the interference...
Hi Bob, the aim of the project is to characterize dispersive properties of mirrors. I have a mirror that was coated with SiO2 and Si3N4 as thin film on Si substrate. So one side is side is reflective the other side isnt. In the interferometer I will use a standard reference mirror in one arm and...
For my undergraduate project, I have been tasked to measure group delay of dielectric mirrors. I have found only papers that point mainly to use a Michelson interferometer using white light interferometry. I have googled and found how to construct a standard Michelson interferometer. However I...