I just found a great article on how frequency doubling works in nonlinear optics. This is the process that is used to create your 532nm lasers (among other colors.) Below is a brief summary of the article. Check out the links for more information. Read the rest of this entry »

This is an interesting post - the inventor uses a laser as a point light source for a projector. Essentially, a lens is used to increase the beam divergence. A slide is inserted between the slide and the laser and the result is a large, sharp image projected. It is monochrome but neat…

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