Re:color ? (Score 2, Insightful)

This is not true, blue laser light specifically around the range of 473nm is becoming increasingly more advanced. Remember when red solid state lasers came around, a simple pen type red laser would cost upwards or $100. Then you could find a crappy keychain one in the 90's for 20 bucks. But at that point green pointers became popular, but the price tag when they were released was also extremely high, now this cost has become more manageable, I recently bought a standard 5mW 532nm laser pointer for $50 on ebay. Blue lasers are following the same patterns as red and green lasers, however, their progress is a bit slower since it uses less common materials, the ticket price on a 5mW is still around $900-1000. I am sure that soon enough we will find that blue lasers will also be selling at the dollar store, while yellow pointers are being sold for $100 (yellow lasers are currently being sold for ~$1200).