Instructor: Wei-Chih Wang, Ph.D.
Office: Delta Hall 319
Grading: credits
Class Time: Lecture M 1:20-3:10 ( Eng Bldg 1 211)
Lab Th 1:10-2:10 PM (TBA)
Objectives
The main goal of this course is to introduce
engineers to the characteristics of light that can be used to accomplish
a variety of engineering tasks especially in mechanical analysis at
macro and micro scales. At the end of the course, students should have a
broad understanding of the fundamental science, basic operation,
technology choice, and practical aspects of free space and guided-wave
optics, with an emphasis on the applications for optics in mechanical
measurement, and have a sense of how to evaluate the potential of
optical methods vs. non-optical methods for any task.
The course involves
lectures, design homework, laboratory work and a final project. The
course is focused on the study of mechanical behavior of materials
through optical experimental methods. The theoretical background and
technique for testing will be extensively discussed. The lab work
involves several major projects as well as various testing
demonstrations. Most of the projects involve analysis, instrumentation,
and theoretical predictions, as well as written reports. The final
design project will require both theoretical and actual hardware design
as well as an oral and written presentation.
Topics
Review of Geometric
Optics and Electromagnetic wave Theory
Introduction to
Light sources and photodetectors
Geometric Moiré:
In-plane displacement measurement
Geometric Moiré:
out of plane displacement measurement
Moiré
Interferometry: Interference and Diffraction, Grating fabrication
Moiré
Interferometry: Holographic and Laser Speckle Interferometry
Photoelasticity:
theory, techniques and
Multilayer
structure: waveguide, filters
Introduction to
fiber optic and waveguide delivery and detection
Periodic structure
sensors
Audiences
This
course is for persons interested in experimental mechanics, physics,
stress analysis, deformation analysis, motion measurement, engineering
design, structural testing, metrology, nondestructive inspection, and
similar fields. This course mainly serves students in mechanics, and
civil, mechanical, and materials engineering. This course should also be
of interest to those interested in validation of numerical models.
"Experimental evidence is the truth theory must mimic."
Textbooks
and References
· Optical
Methods of Engineering Analysis, Gary Cloud, Cambridge University Press.
· Handbook
on Experimental Mechanics, Albert S. Kobayashi, society of
experimental mechanics.
· Applied
Electromagnetism, Liang Chi Shen, Weber&Schmidt Dubury
· Fundamentals
of Photonics, B. Saleh, John Wiley& Sons.
· Optoelectronics
and Photonics: Principles and Practices, S. O. Kasap, Prentice Hall.
· Fiber
optic Sensors, E. Udd, John Wiley& Sons
· Selected
papers in optical sensors, optical MEMS devices and integrated Optical
devices.
· Additional
reading materials will be handed out or links will be provided!
Course Prerequisite(s)
·
First year physics in
Optics or permission of instructor.
·
Junior level Mechanics of
materials or equivalent.
·
Knowledgeable in CAD
Software (e.g. AutoCAD or SolidWorks)
·
A creative mind and
willingness to get one’s hands dirty in construction
·
Come to class with an open mind and a willingness to participate fully!
Lecture Notes and Assignments
Week 1
Introduction of light – nature of light, Production and measurement of
light Electromagnetic
spectrum,
Ray-Optics Approach (Snell's law, Geometric optics, thin lens, mirror
and matrix method)
Week 2
Ray-Optics Approach (Snell's law, Geometric optics, thin lens, mirror
and matrix method)
Week 3
Ray-Optics
Performance Factors (diffraction effect, aberrations- geometry,
chromatic, astigmatism,
coma,
field curvature, distortion, lateral color)
Week 4
Electromagnetic-Wave Approach (wave equation, polarization, diffraction,
interference, grating)
Week 5
Electromagnetic-Wave Approach (wave equation, polarization, diffraction,
interference, grating)
Week 6
Electromagnetic-Wave Approach (wave equation, polarization, diffraction,
interference, grating)
Week 7
Optical Components (optical materials, coatings, filters, mirrors,
lenses, prisms and polarizing optics)
Week 8
Light sources (broad band gas and filament light sources, LED, coherent
gas and solid state
light sources)
Week 9 Radiometry
and Photometry
Week 10
Detectors (photodiode, phototransistor, photomultiplier, CCD camera)
Week 11
Optics in mechanical measurement: Free space Optics (Geometric Moiré:
In-plane displacement
measurement)
Week 12
Optics in mechanical measurement: Free Space Optics (Moire
Interferometry: Interference and
Diffraction, Grating fabrication)
Week 13
Optics in mechanical measurement: Free Space Optics (Moiré
Interferometry: Holographic and
Laser Speckle Interferometry)
Week 14
Optics in mechanical measurement: Free Space Optics (Photoelasticity,
birefringent property measurement, digital imaging method)
Week 15
Multilayer structure- waveguide, fiberoptic, filters (fundamental
waveguide theory and application)
Week 16 Optics in mechanical measurement: Fiberoptic and
polymer waveguide sensors (Intensity
modulation,
phase modulation)
Week 17
Periodic structure sensors (Grating, photonic crystal, metamaterial)
Week 18: Final Presentations
Homeworks and Design Projects
Design Project #1: Mirror design project
Homework #1
Design Project #2: Prism design project
Homework#2
Design Project #3: RP Optics
Homework#3
Design Project #4: Edible Optics
Homework #4
Final project
Lab
Lab
1 Refraction and Diffraction Experiment
Lab 2
Geometric Moiré Experiment
Line and grid patterns:
Download
grating1 (period: 0.03 inch)
Download
grating2 (period: 0.031 inch)
Download
grating3 (period: 0.0311194968 inch)
Download
grid1 (period: 0.03 inch)
Download
grid2 (period: 0.031 inch)
Lab
3 Moiré Interferometry Experiment
Lab 3 Grating Sample Preparation Procedure
Lab
4 Shadow Moiré Experiment
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