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- Jan 26, 2015
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Yep, a 1W blue beam is fairly visible in dim light and it will burn fairly well.
Also, can somebody explain to me the benefits of each colored laser and the pricing (150mW Green is more expensive than 200mW red but I can get a 1W blue for ~$60 or a 300mW violet for $42) Does it have to do with the visibility or burning power or how easy it is to make or something like that?
It is a combination of demand and how easy they are to make them. The 405nm diodes are manufactured in huge numbers because they are used in DVD players. The same is true of the blue 445nm diodes that are used in projectors. Some red diodes are also used in projectors as well as CD/DVD players, and have some medical uses, they were also the first pointers, so red are reasonably priced. A 532nm green isn't a direct diode laser, it is DPSS so it has a very complex design, the 520nm and 515nm green diodes haven't been around long, they were just recently invented so they aren't cheap.
Also I am convinced that this site isn't entirely correct but I think it mostly is:
Relative Laser Beam Brightness Calculator: (652nm 1mw) vs. (511nm 1mw)
Alan
EH isnt 650nm used in dvds, 405 is blu-ray right ?