Photonics 230 – Laser Electronics
Photonics 230 is a survey course covering a wide range of topics including electro-magnetic theory, radiometry, human vision, laser theory, semiconductor light sources and detectors, and circuit design. As there is no textbook for much of the course material, this web page provides a collection of online references to supplement the lectures.
Electric Field Applet - Caltech
"This applet allows the user to set up a distribution of charges, upon which the applet will show the electric potential, electric field lines, and equipotential lines. In addition, the electric force will be observed through real time interaction of charges."
Electric Field and Potential Lines Applet
"Field lines are an abstract concept (in that they don't really exist and can be difficult to visualize). We recommend that you use this applet to get a feel for electric field lines and electric potential lines for a number of different point charges with different magnitudes, signs, and values."
Light Measurement Handbook
3-D Color Space
CIE color chart and various RGB color cube illustrations. (Scroll down.)
Color Spectrum Charts
Under "Items of Interest", in part I of Sam's Laser FAQ, there is a series of beautiful color spectrum charts.
Rods and Cones
Good color spectrum charts and description of the differing roles of rods and cones. (Scroll down.)
Luminous efficacy graphs for photopic and scotopic vision, and a perceived brightness graph of diffusely reflected light.
Physical Properties of Semiconductors
Band structure and carrier concentration. Electrical, optical, thermal and mechanical properties of major semiconductors and semiconductor compounds.
Luxpop Index of Refraction Values and Photonics Calculations
Online resource for calculating a large of optical properties, including index of refraction, reflectivities, free spectral range, gaussian beam propagation, polarization system analysis, wavelength conversions, dB/percentage conversion, optical computing, gaussian curve fitting, and cytometry.
Photonic Crystals: Periodic Surprises in Electromagnetism
A five-part series of lectures on photonic bandgap materials and fibers. This tutorial from MIT
provides a wealth of information about the physics and engineering of periodic optical solids. Lecture 5 contains a link to a movie of a "hollow bandgap polymer/chalcogenide fiber carrying 1-2W of 10.6um laser power, burning a hole through a post-it note covered with a film of the same polymer". Requires substantial knowledge of math, electromagnetism and solid state physics.
Circuit Diagrams for Commercial Lasers
Parts III and IV of Sam's Laser FAQ contain many circuit designs for commercial and home built laser power systems. This web page also contains many photos of individual laser parts, schematic diagrams of laser systems, and laser safety warning signs.