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ah. nice clean build!

looks similar to my first BR build - I used a small radio shack project box. where's the driver in the picture of your pointer? i see battery + switch + diode.. no driver (??)

looks awesome! i like the meredith glass assemblies, they look and work well, tho as already noted they are rather costly.

I think it's a good idea. Remember a few years back watching some videos of people igniting their nic sticks with a laser pointer at wicked lasers site. Even a weak pointer (~125mW + ) will work, tho it can take at least 10 seconds or more. Whatever the design it should be reasonably safe, so...

Eh, don't be such a curmudgeon. If you're young and have nothing to lose a riot can be fun. Most of those kids aren't trying to change the world. There's an exploding population of people, and the gulf between the 'haves' and the 'have nots' is growing. I doubt most of those Greek kids are...

Re: Tremble in fear- behold the mighty incinerator Where did you obtain the diode?? If it's single mode you've got a stinger with that optical assembly. Looks like fun.

Re: Tremble in fear- behold the mighty incinerator lol Good grief. 2 watts eh? The glass you're using on this one intrigues me. What was the optical assembly originally built to be used as? Unless you've got a single mode diode focus will not be that great. However 2 watts of organized...

Yea this isn't the first time I've seen this microvision display. It was also discussed a few months ago on <alt.lasers> Conceptually it's a raster display, like an old school CRT monitor. Except I'd say microvision perfects the concept. CRT monitor uses electron guns + phosphors. Not very...

another way to use laser as microscope - reflection. my avatar, and the images below,were made reflecting the laser off a frosted incandescent light bulb from ~20 feet away. the reflected spot then projects out 10 feet to wall. interference pattern modulated by surface (in these images glass...

The diode (803) in my pointer died yesterday :( 50-60 hours of use, using 100mA. Its death may have been due to static. So today I ripped apart another toshiba drive and extracted another 803 diode. I'm running this one @ 80mA. Should get over 15-20 hours of battery use using 6AA. Im using the...

Don't give up!! As coincidence would have it, my 803 diode popped yesterday. :( I was driving mine @ 100mA, and it was a good little burner. It died after 50-60 hours of use. I'd left it on for hours at a time. So,, I'm going to rip apart another Toshiba drive (from Geeks) this afternoon and...

I can focus on mine, but only when I'm close to it. Apparently the human eye/lens combo focuses best on red/green - blue, and especially violet, not as well. Also,  >95% of the color sensitive cells in the retina are red/green sensitive. Just a few are blue/violet sensitive. So peoples ability...

Re: Violet diverges more than red?  Then why . . In theory 405nm should diverge less then red (650nm). The shorter the wavelength the better the divergence and the tighter the focused spot size (hence a BR disc has more bits on it and a greater capacity). However, certain 'real world' factors...

Re: Stability and Lifetime Question concerning PHR Yours is another data point to be added to our empirical knowledge base on this diode. Since no one really knows the true specs for this diode it's a bit of a crap shoot. One member (heruursciences) thought the 803t may be this sharp diode...

well, i don't think i'd call them 'huge', tho they certainly are not pocketable. quite hand holdable. 20+ years ago all lasers were very large, those lil project boxes are nothing. my smallest mod is this keychain pointer: http://www.laserpointerforums.com/forums/YaBB.pl?num=1212270770/8#8 i...

Images of my DIY lasers. Two violet lasers (405nm) and two red lasers (635nm & 655nm). Plus a hacked keychain pointer with a ~15mW 635nm diode Below, image of my 4 DIY lasers. Far left is a 15mW 635nm (red) laser, in the flashlight body. Next, an 80-90mW red laser, first brick laser from left...

Re: Finally done it (I killed it by sneezing) Looks good. Happy lasing. I see you're using the same radioshack potentiometer I used in my DDL circuits. What I found is over time I had to keep adjusting the pot to keep the current reaching the diode constant. Apparently the 'wiper' in the pot...

Rayleigh scattering: http://en.wikipedia.org/wiki/Rayleigh_scattering More of the 405nm radiation is scattered by the atmosphere.. reaching your eye (brighter beam) I've got a 80-100mW BR. In bright to dim light the beam is not impressive. no more so than a red. Smoke helps. However in a...

Like that first picture you posted. Sexy. Nice chunk of copper. Must have been a bitch to machine. Looks great though, and functional as well.

Re: Help building a very powerful Handheld green l Sam's laser FAQ has some goo on making your DPSS (green) laser. Apparently up to 5 watt.. http://www.repairfaq.org/sam/lasercds.htm#cdstoc Concept isn't too heavy, but you'll need to be able to come up with an xtal set/pump diode combination...