On Tue, Apr 20, 2004 at 05:49:32AM -0400, Erik Reuter wrote: > The cheap ones are AlGaAs/GaAs/AlGaAs quantum well laser diodes (they > usually have a few QW's in the gain region, and a stepped or graded > AlGaAs region for optical confinement).
Actually, that should be AlGaInP for the visible red ones. The AlGaAs/GaAs ones I mentioned are actually NIR (used for CD players). Here are some nice pictures: http://www.photonic-products.com/techinfo/sanyo_tech/sanyo_databook.pdf -- Erik Reuter http://www.erikreuter.net/
_______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
