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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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A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
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Related Experiment Video

Updated: May 6, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

[Design of a compact structure interferometer].

Lei Shi¹, Kai Li, Zhi-Fan Gao

¹School of Electronic Information, Wuhan University, Wuhan 430079, China. eis_ShiLei@whu.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|October 29, 2013

Summary

This summary is machine-generated.

A new interferometer system using cube-corner reflectors and plane mirrors was developed. Experimental validation confirmed its high accuracy, resolution, and signal-to-noise ratio for practical applications.

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Last Updated: May 6, 2026

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Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Area of Science:

Optical engineering
Interferometry
Precision measurement

Context:

Development of advanced optical instrumentation
Need for high-performance interferometers in scientific research
Challenges in achieving stable and precise mirror movement

Purpose:

To design and analyze a novel interferometer system
To implement a Proportional-Integral-Derivative (PID) control algorithm for precise mirror movement
To evaluate the system's performance for practical applications

Summary:

A novel interferometer system was designed utilizing cube-corner reflectors and fixed plane mirrors.
The moving mirror drive system was analyzed, employing a PID governor algorithm for collimated, uniform, and smooth motion.
Optical system parameters and device specifications were detailed, and experimental validation confirmed the system meets practical application requirements for wave number accuracy, resolution, and signal-to-noise ratio.

Impact:

Provides a high-performance interferometer for scientific and industrial applications
Enables more accurate and reliable measurements in fields requiring precise optical analysis
Contributes to advancements in optical metrology and instrumentation design