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  1. R

    BIG DIPPER LASERS - MADE WITH RECYCLED JUNK?

    Wow that's bad but then again you get what you pay for with these things! It's like buying tools and if your living depends on it you don't buy from Harbor Freight, for example. ;)
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    TITAN Laser 350mW - Pics with Preview

    You would lose some power with multiple elements. Careful alignment prevents abberations. Damage from reflected power isn't much of an issue with DPSS lasers. With direct diode lasers it can cause the output to drop IF the driver circuit is monitoring the PD output (as it SHOULD be!).
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    My RPL- 260 review. Pictures and videos!

    Ok so now that makes sense. (the danger label) They've got a pump diode in there with a collimator pointing class IV radiation right out the front? Sounds sweet but those diodes have beam quality issues requiring lots of optical correction. Even with said correction, it's possible to have a...
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    TITAN Laser 350mW - Pics with Preview

    That laser could really be shrunk down by changing from 3D cells to Li-Ion pack. I've never had one in hand nor had the head removed but if it's like the PGL and RPL, that heatsink isn't even (thermally) bonded to the optical train properly. Granted in proper DPSS operation the Vanadate likes...
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    My RPL- 260 review. Pictures and videos!

    That does not look like the PGL I've seen (and held). The shutter was a dial you turn not a slide lever like the one pictured above. Of course the C powered lasers are going to feel lighter than the 18650! The battery tube is much thinner! The finish on the PGL again was much better than the...
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    My RPL- 260 review. Pictures and videos!

    Wow that techlasers unit is identical to an RPL. BTW the laser aperture has nothing to do with beam size. If you remove that last element with the tiny hole you will find there are two beams coming out! Apparently it's a crude form of filter to only allow the on axis beam to come out. But...
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    BluRay laser module - can it erase an eprom?

    That's interesting. The "erasing lamp" appears to be a T5 4W fl bulb of the "germicidal" type. These peak around 256 nm though. They have CF 9 packages available too: http://en.wikipedia.org/wiki/Image:Germicidal_Lamp_1.jpg
  8. R

    BluRay laser module - can it erase an eprom?

    The 405nM output at 5ish mW - can it erase an eprom if the shined on the window? Unfortunately the only eproms I have are in running equipment so I cannot try this for obvious reasons!
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    Most-reliable laser modules for $500-$1K?

    LambdaPro modules are decent and have a 100% duty cycle. http://www.alibaba.com/catalog/10951495/200mW_532nm_Green_DPSS_Laser.html
  10. R

    Need fuse current value for Metrologic ML-868 laser...

    Try putting a light bulb in series with the laser. A 40W incandescent lamp should work. This will help to prevent excessive damage should a major overcurrent situation develop.
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    Duty cycle of RPL increased to 100%

    Updates?
  12. R

    Name that laser ! (PRIZE UPDATE post # 49)

    Re: Name that laser ! Tachyon
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    Review of a Blu-ray Laser Module

    Re: Review of a Blu-Ray Laser Module Is this what the mod and parts cost? :huh2: [/b][/color][/size][/font][/color][/size][/font]
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    Directly injected 532nm green laser diodes on the horizon!!!

    There is one very bad aspect of semiconductor lasers - beam quality. Mode and coherence length is inferior to solid state and gas lasers. Of course for the majority of the enthusiast crowd that lights matches and pops balloons, this will not matter. ;) It's possible to at least circularize...
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    Laser mysteriously stopped working after 5 minutes. DOA?

    The diode could be just about dead, or one of the leads to the driverboard has a cold solder joint. It's under warranty, they'll replace it.
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    First impressions of my new 300mw Hercules w/pics&video

    Not simultaneously. It's like having a fixed focus camera - there will be compromises. The solution is to unscrew the head! The RPL head unscrews so it's possible to have a beam the fraction of a human hair in thickness a foot away if you wish. 350 mW+ at that diameter has stunning power...
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    First impressions of my new 300mw Hercules w/pics&video

    If you don't mind giving up some burning power at close range the divergence can be brought down well below 0.5 mrad. The drawback is the beam coming out is going to be larger. (hence less burning power) If you want it really small far away, that's a good tradeoff.
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    First impressions of my new 300mw Hercules w/pics&video

    Yes it would particularly dark colored ones. There's no question about it - water passes the beam very well. Try this experiment once. Get a clear drinking glass that distorts the beam as little as possible. Fill it with fresh tap water. Put your finger in the middle of the water and lase...
  19. R

    i think i farked it.

    MCA = Monolithic Crystal Assembly. With small DPSS lasers the KTP and Vanadate crystals are glued together for simplicity and cost saving. It makes the unit more rugged as there is one less part that can get knocked out of alignment. Aligning discrete KTP/Vanadate elements can be a real PIA...
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    New Leadlight APC - Modders beware of new luckyduck, bigha and jasper lasers.

    Re: New Leadlight APC deconstrucetd - beware of new luckyduck, bigha and jasper laser Ouch! Look how TINY that MCA is! :mad: Then again what should we expect for the price?

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