# Welcome to Physics 471!

**Winter 2019**

## General Information

**Instructor: John S. Colton**

**Office**: N335 ESC

**Office hours in room N361**: Tues 3:30-5, Thur 4:30-6, Fri 5-6--but only the day before HW is due (or on Friday, in the case of HW being due on Monday)

**TA: Spencer Thevenin, ** sjthevenin@yahoo.com** **
**Office hours in room N361**: M 3-5, Th 11-1, F 3-5 (every M Th F)

**Additional office hours available by appointment**.

## Quick Links

- Direct link to our class on Max: //max.byu.edu/20191-phscs471/

## Syllabus

- The syllabus and tentative schedule is available on Max. If you'd like a hardcopy you'll to print that out yourself.

## Handouts

Here are handouts for/from various class periods, to be updated throughout the semester.

- day 1 - What you should already know.pdf
- Exam equations handout, updated at various times: day 1 - equations to be given on exams - updated 9 Apr 2019.pdf
- day 5 - Complex numbers.pdf
- day 6 - Lorentz model derivation.pdf
- day 7 - The Power of the Lorentz Model.pdf
- day 8 - Derivation of Poynting's Theorem.pdf
- day 8 - derivation of s-polarization Fresnel coefficients.pdf - available as a hardcopy handout only, not via download. See me if you missed class when it was handed out.
- day 11 - converting T02 to more useful form.pdf
- day 12 - plots of T02 for various F's.pdf
- day 13 - multilayer examples.pdf
- day 15 - solving fresnel's eq for n in crystals - example 1.nb (Mathematica); day 15 - solving fresnel's eq for n in crystals - example 1.pdf (pdf)
- day 15 - solving fresnel's eq for n in crystals - example 3.nb (Mathematica); day 15 - solving fresnel's eq for n in crystals - example 3.pdf (pdf)
- day 21 - Fourier series and transforms.pdf
- day 22 - Dirac delta functions.pdf (pdf); day 22 - Convolutions.pdf (pdf) day 22 - convolution demonstration.nb (Mathematica)
- day 31 - aberrations.ppt (PowerPoint)
- day 32 - diffraction equations.ppt (PowerPoint)
- day 33 - diffraction through rectangular slits.nb (Mathematica)
- day 35 - Bessel functions.pdf
- day 36 - diffraction from circle and circle-square combo.nb (Mathematica) | day 36 - diffraction from circle and circle-square combo.pdf (pdf)
- day 36 - spatial filtering.ppt (PowerPoint)
- day 39 - entropy and boltzmann factor handout from Physics 123.pdf (for those who are interested in the derivation of the Boltzmann factor in the context of maximizing entropy)
- days 41 and 42 - color.pptx (PowerPoint) | days 41 and 42 - color.pdf (pdf)

## Downloads for Homework Problems

- Here are the "knife edge technique" data files, laser power vs. x. The numbers in the file names indiate the location the knife edge was for each set of data, i.e. the z-value in mm. The x-values of the data in the files are also in mm. The units of the y-values of the given data (power meter readings) are unimportant.
- Color stuff for HW 15:
- Here is a plot of the color matching functions: plot of CIE 1931 color matching functions.pdf (I will bring hardcopies to class)
- Here is a plot of the chromaticity diagram: CIE 1931 color space chromaticity diagram.pdf (I will bring hardcopies to class)
- Here is the website link where you can download the numerical values of the color matching functions: //www.cvrl.org. There are a few different versions of the color matching functions. Let's stick to the original 1931 functions (they are also the ones shown in the plot two bullet points above), even though some modifications have been made since then which should make the more recent ones more accurate. To download the original 1931 functions go to the cvrl website then:
- Click the "CMFs" link on the left
- Click the second "E/w" button below the "CIE 1931 2-deg, XYZ CMFs" title to download a file (the first button gives points every 5 nm, the second button gives points every 1 nm).

## Animations

- Here are several optics animations, many developed by Dr. Peatross as he was writing the textbook.
- Here's an animation illustrating what the free spectral range means. The y-axis is the transmission of a Fabry-Perot interferometer with F = 100; the x-axis is the separation distance d, going from 0.9999 cm to 1.0001 cm. One plot (the blue curve) is for lambda = 500 nm. The other plot (tan curve) is for lambda = 500 nm + (a small delta lambda), and the plot is animated based on the value of delta lambda. The changing delta lambda is given in the plot label. You can see what happens as delta lambda is varied from 0 to 2x the FSR of 0.0125 nm.
- Here are depictions of spherical waves from point sources

- Here's an animation illustrating the Rayleigh criterion by plotting the sum of two jinc^2 functions.

## Lecture Notes from Winter 2012

The lectures in Winter 2019 will likely be pretty similar for a given topic, so these are posted to assist those who need to miss a class period.

- lecture 1 - intro, multivariable calc: PowerPoint | scanned notes
- lecture 2 - maxwell's equations 1: PowerPoint | scanned notes
- lecture 3 - maxwell's equations 2: PowerPoint | scanned notes
- lecture 4 - materials, wave eqn: PowerPoint | scanned notes
- lecture 5 - complex numbers, etc.: PowerPoint | scanned notes
- lecture 6 - Lorentz model: PowerPoint | scanned notes
- lecture 7 - conductors, poynting, irradiance: PowerPoint | scanned notes
- lecture 8 - refraction and reflection: PowerPoint | scanned notes
- lecture 9 - Brewster, TIR, metals: PowerPoint | scanned notes
- lecture 10 - double interfaces: PowerPoint | scanned notes
- lecture 11 - interfaces at angles: PowerPoint | scanned notes
- lecture 12 - Fabry Perot: PowerPoint | scanned notes
- lecture 13 - multilayers: PowerPoint | scanned notes
- lecture 14 - light in crystals: PowerPoint | scanned notes
- lecture 15 - uniaxial crystals: PowerPoint | scanned notes
- lecture 16 - exam 1 review: PowerPoint | [no scanned notes]
- lecture 17 - polarization states: PowerPoint | scanned notes
- lecture 18 - Jones matrices: PowerPoint | scanned notes
- lecture 19 - ellipsometry and group velocity: PowerPoint | scanned notes
- lecture 20 - group velocity, Fourier: PowerPoint | scanned notes
- lecture 21 - Gaussian pulse, frequency spectrum: PowerPoint | scanned notes
- lecture 22 - delta function, convolution: PowerPoint | scanned notes
- lectures 23, 24 - Dr. Peatross substituting
- lecture 25 - visibility - Fourier spectroscopy: PowerPoint | scanned notes
- lecture 26 - spatial coherence: PowerPoint | scanned notes
- lecture 27 - exam 2 review: PowerPoint | [no scanned notes]
- lecture 28 - rays: PowerPoint | scanned notes
- lecture 29 - ABCD matrices: PowerPoint | scanned notes
- lecture 30 - complex imaging: PowerPoint | scanned notes
- lecture 31 - aberrations: PowerPoint | scanned notes
- lecture 32 - diffraction: PowerPoint | scanned notes
- lecture 33 - Fraunhofer diffraction: PowerPoint | scanned notes
- lecture 34 - array theorem, gratings, spectrometer: PowerPoint | scanned notes
- lecture 35 - cylindrical apertures: PowerPoint | scanned notes
- lecture 36 - diffraction through lens: PowerPoint | [sorry, I forgot to scan these notes]
- lecture 37 - Gaussian beams: PowerPoint | scanned notes
- lecture 38 - exan 3 review: PowerPoint | [no scanned notes]
- lecture 39 - blackbody radiation: PowerPoint | scanned notes
- lecture 40 - einstein A & B, lasers: PowerPoint | scanned notes
- lecture 41 - color, part 1: PowerPoint | scanned notes
- lecture 42 - color, part 2: PowerPoint | scanned notes

## Old Exams

- Here are some exams from Winter 2008 semester for you to use as study aids. Important notes: (a) Some of the chapters were in a different order compared to the current version of the book, so the exams didn't cover things in the same order. (b) There were only two midterm exams, rather than three. That also changed the coverage per exam.
- Winter 2008 exam 1 | solutions
- Winter 2008 exam 2 | solutions
- Winter 2008 final exam | solutions