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Deflection of a Beam

Deflection of a Beam

Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...

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Related Experiment Video

Updated: Sep 21, 2025

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

Optimization of Optical Phase Profile in Beam Deflector with Advanced Simulation Method for High Diffraction

Andrey Manko¹, Young Kim², Aleksander Morozov^1,3

¹Samsung R&D Institute Russia, Office 1500, 12 Bldg.1, Dvintsev Str., 127018 Moscow, Russia.

|May 28, 2022

Summary

This summary is machine-generated.

This study presents a liquid crystal spatial light modulator (SLM) beam deflector (BD) that precisely controls light phase. The device achieves high diffraction efficiency (DE) for efficient light steering applications.

Keywords:

beam deflector diffraction efficiency nematic liquid crystal optical phase control

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Last Updated: Sep 21, 2025

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Published on: August 12, 2013

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Published on: January 28, 2019

Area of Science:

Optics and Photonics
Materials Science
Electrical Engineering

Background:

Precise control of light phase is crucial for advanced optical systems.
Liquid crystal spatial light modulators (SLMs) offer efficient phase profile generation for light steering.
Existing SLMs require optimization for maximizing diffraction efficiency (DE).

Purpose of the Study:

To develop and optimize a liquid crystal spatial light modulator (SLM) based beam deflector (BD) for efficient light steering.
To investigate the relationship between liquid crystal (LC) director distributions and diffraction angles.
To achieve high diffraction efficiency (DE) in a beam steering device.

Main Methods:

Utilized a one-dimensional micro-patterned electrode design on a liquid crystal SLM.
Employed an advanced simulation method to optimize phase profiles by analyzing LC director distributions.
Investigated diffraction patterns computationally and experimentally.

Main Results:

Achieved high 1st order diffraction efficiency (DE) of approximately 60% at 1°, 37% at 2.5°, and 7.5% at a 7.5° steering angle.
Demonstrated good agreement between simulated and experimental diffraction patterns.
Successfully realized enhanced DE for the beam steering device.

Conclusions:

The developed beam deflector (BD) system with an optimized phase profile and advanced driving algorithm achieves high diffraction efficiency.
The study validates the simulation method for predicting LC director distributions and optimizing DE.
This work presents a successful experimental realization of an enhanced DE beam steering device using liquid crystal SLMs.