I want to know why the blue lasers are generally more powerful and expensive than moin green lasers. What is the difference? is it better to take a 300mw green laser 1w or blue? thank you
The green laser is a lot more complex to build; it uses a solid state pumping for generating green light - a highly inefficient process.
Blue lasers have been made common by the DLP projectors manufacturers; a projector have more than a single diode... Some time ago most had 24 diodes inside, each capable of ~1.5W (!!!)
The green hits almost the peak of eye sensibility, so a single mW of green can be as strong as five mW of blue.
So 300mW green, being more expensive (considering you're talking about a reputable company selling these) would be more bright and would have a smaller divergence (which is desirable).
The blue, with a big divergence in one axis, would rely on its power to maintain long-range visibility.
People have been spoiled by the power... both are bad ideas if you never had a laser before...
ok thank you for the explanation. I already possesses a laser protective eyewear. I made very careful when using. you think it would be better than a green laser blue
Not sure what section they put the GBs in. Try the front page and look around. Me I just hit 'New Posts' about 50 times a day so I can snoop on everything. :crackup:
Really you need a lot of education to understand things laser---eveything is possible in imagination not so in real world.
No not outdoors in full daylight--you can never compete with the sun.-even a 1000mw 532 green---maybe in a daylight lit room if you get a 1.5 W 532 green lab type ---very powerful and extremely dangerous laser. To quote one experienced member " 10W of laser power, while a lot, still isn't spectacular. A clear air visible outdoor daylight beam will take you probably 100W+ of 532nm.. Much more at 445nm. " post #10 here: http://laserpointerforums.com/f44/list-1w-higher-laser-diodes-54598.html
Seeing a beam at all depends upon atmosphereic conditions--particles in the air reflecting---in a vacuum there is no beam--but that is a whole different and complicated topic
If you are new to lasers/without a lot of laser experience, you should not buy such a powerful laser anyway--you could end up blind from a minor reflection or hurt someon else. Not toys.