# Introduction To Lasers

## Announcements

January 4. First day of class.
January 5. Lecture notes section created. Go download the notes for next Monday's lecture (starting on page 17).

## Homework

 #1 Assignment solution #2 Assignment solution #3 Assignment      Excel Sheet solution #4 Assignment solution #5 Assignment solution #6 Assignment solution #7 Assignment solution

## Applets From Various Sites

 Gaussian Modes Illustrated Computer generated idealized case, as opposed to the handout I gave you. Cavity Mode Shows your location in the stability diagram as you modify cavity parameters. Find a configuration that gives you a large mode everywhere. Try other variations. Laser dynamics You select the pump/loss/decay parameters and it solves the rate equations. Excellent for understanding self-Q-switching, transient response, and the approach to steady-state.

 Fourier Synthesis Uses your speakers so you can hear the result. Movies There are a couple movies at this site near the bottom of the page. Probably not anything you don't already understand (after taking this course), but satisfying to watch anyway. Group velocity and phase velocity Simple illustration of how a wave looks when differing speeds are used. Try it at the highest frequency and follow the motion near the node in the envelope function. Group Velocity Demonstration Allows you to superpose two arbitrary waves specified using C-like syntax.

 Fermat's Principle Illustrated for reflection and refraction. Subluminal Illustrates how a pulse can appear to propagate faster than light. (The author should have named it "superluminal" I suppose.) I like this one.

 Societies Journals Sites w/ Relevant Content Lasers Articles Laser Tutorials For the Hobbyist A Few Laser Companies

 OSA Online Journals   Applied Optics, JOSA A, JOSA B, Optics Express, and Optics Letters. IEEE Journal Of Quantum Electronics Optics and Photonics News Laser Focus World Photonics The Industrial Physicist (American Institute of Physics) often has articles of importance to lasers and optics.

 Why You Need Chirped Pulse Amplification Chirped Pulse Amplification St. Andrews Ultrashort Pulse Laser Tutorial Trebino's FROG site * OpticsNotes

 Free electron laser at UCSB X-Ray Laser * Quantum Optics and Atom Optics

 Science magazine has a special issue on coherence. See it here.

 Rami Arieli - The Laser Adventure - extensive, with discussion of a variety of applications.

 The Homebuilt Lasers Page The Laser, Optics and Holography Ring

 Coherent, Inc. Spectra-Physics Quantronix