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White Light Interferometry: Applications and Working Principle
Working Principle of White Light Interferometry
A white light interferometer uses a broad-spectrum light source, such as a superluminescent diode or a wavelength-swept laser, combined with a Michelson interferometer setup. The interference of light waves from the source provides information about the optical path length differences in the system.
Application of White Light Interferometry
Medical Imaging
White light interferometry is utilized in optical coherence tomography for medical imaging applications.
Dispersion Measurements
It is used to measure the chromatic dispersion of optical components by analyzing the interferogram obtained when scanning the relative arm length.
Distance Measurements
White light interferometry provides accurate distance measurements, especially for surface profiling, without the ambiguity issues faced by narrow-linewidth laser interferometers.
Reflection Measurements
Reflections within photonic integrated circuits can be detected and analyzed using white light interferometry techniques.
Further Research and Development
White light interferometry continues to be a valuable tool in various fields such as optics, photonics, and medical imaging. Ongoing research aims to enhance the resolution, sensitivity, and applicability of this technique in diverse applications.
Source: AZoM
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