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$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

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Related Experiment Video

Updated: Jun 10, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Diffraction effects in optical microelectromechanical system Michelson interferometers.

Tarek A Al-Saeed¹, Diaa A Khalil

¹Biomedical Engineering Department, Faculty of Engineering, Helwan University, 1 Sherif Street, Helwan, Helwan, Egypt. tarek1971@ieee.org

|July 22, 2010

Summary

This summary is machine-generated.

Diffraction significantly impacts microelectromechanical system Michelson interferometers. Optimizing detector size can improve visibility and resolution in Fourier transform spectrometers.

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Published on: April 26, 2014

Area of Science:

Optics and Photonics
Microelectromechanical Systems (MEMS)

Background:

Michelson interferometers are crucial for various applications, including Fourier transform spectroscopy.
Microelectromechanical systems (MEMS) enable miniaturization of interferometric devices.
Diffraction effects can degrade the performance of optical instruments.

Purpose of the Study:

To investigate the impact of diffraction on the performance of MEMS-based Michelson interferometers.
To develop a model for quantifying diffraction-induced visibility loss.
To determine the optimal detector diameter for maximizing fringe visibility and enhancing spectrometer resolution.

Main Methods:

Utilized a simplified Gaussian model to analyze diffraction effects.
Calculated the degradation of interferometer visibility as a function of diffraction.
Estimated the optimum detector diameter for maximizing fringe visibility.

Main Results:

Quantified the reduction in fringe visibility caused by diffraction.
Identified an optimal detector diameter that maximizes fringe visibility.
Demonstrated the influence of detector size on the resolution of Michelson interferometer-based Fourier transform spectrometers.

Conclusions:

Diffraction is a critical factor affecting MEMS Michelson interferometer performance.
Detector size optimization is essential for maximizing signal quality and spectral resolution.
The developed Gaussian model provides a valuable tool for designing and analyzing such systems.