Recent content by BKarim

"It seems like it should take 1 1064nm photon and split it" Photons are not corpuscles but waves that propagates ( like riddles in surface of water ). In vacuum photons are just virtual particles (electrons and positrons) that oscillate and transmit their oscillation to other charged...

maybe the customs are waiting for their bakchich ?

in monomode the shape of the "dot" depends on the shape of the pump laser, on the shape of the lasing medium, of the semi-transparent mirror (on the exit face of the crystal) from where the laser exits. if the mirror were star-shaped, you would get approximatively a star-shaped dot. in...

i want a silver (not white!) keychain please :-)

is the divergence good ? i have read many times that these 10440 keychains have big divergence...

"even if it is just 100mW" it may be only 20mW ...

"Please build me a 1 Watt 445nm Laser for $20.00" it is absolutely evident that an home-made production will never be as cheap than industrial production.

"My question is why hasn't this happened yet" i think it has already happened, but for the moment the sellers keep the prices of their 445nm pointers artificially high, since there is a strong demand... so if you want to see the prices to drop, stop buying blue lasers at 150$ 300$ 500$ , cause...

I have read in sam's laser FAQ that a moron who stare directly into the beam of an <5mw keychain for 1 minute kept no sequels. So we can assume that 650nm 5mW is totally safe. Personally i put the no-goggles-limit at 50mW (please don't discuss this) So my question is: at 40mW (real) is a 405nm...

i know that different wavelengths have different brightness. I was asking specifically for 405nm. "Even under 5mW it´s dangerous" I was speaking of normal use with normal people :-)

20s the batteries kept cold. I'm asking: if these violet laser are safe they are too dim to play with, and if they are bright enough they are not safe, isn't it ?

yes that's what i wanted to know: if they are safe, they are dim, and if they are bright enough, they are dangerous ?

buy the atlasnova. if you can't tolerate rattling, put a paper inside. you can safely take the 5mW

i just tried with two NiMH, and the host is hot now... what's getting hot: diode or driver ?

in a few month or years this must be possible.