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The Helium Neon Laser and Power Supply:Their Characteristics and Use
by Elden Peterson
Laser Tutorials
Part of LaserNet's site, includes history, charts and a glossary.
More Than 101 Ways to Use a Laser
Here are some good ideas for your science fair project involving lasers
Photonics dictionary
The Photonics Dictionary contains more than 5800 industry-related terms, along with acronyms, abbreviations and illustrations.
Sci.Electronics.Repair FAQ
This site features Samuel M. Goldwasser's latest and greatest "Notes on the Troubleshooting and Repair of..." series of comprehensive repair guides for consumer electronics equipment and other household devices.