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Old 07-21-2010, 12:37 PM #1
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Default What happens when a laser 'blows'?

I have a 50mw green laser diode. When i connect it to 3v there is a faint red glow from the diode which quickly dimms. Is it broken, or am i not feeding it enough volts?


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Old 07-21-2010, 12:50 PM #2
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Default Re: What happens when a laser 'blows'?

Did you try to pot mod this laser??

That faint red glow is actually high power Infrared light... DO NOT LOOK INTO IT!!

Your module could have a crystal misalignment causing no green to be produce hence letting the IR to leak, or you have pot modded it past the crystals threshold and not being able to produce green light anymore. 3V is the correct voltage for a green module.

Can you get a picture of your setup?
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10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
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660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
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632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
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Total: 71,868.5 mW

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Old 07-21-2010, 12:56 PM #3
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Default Re: What happens when a laser 'blows'?

s**t. That red was pretty close to my eyes.
Theres no real 'setup' but ill tell you this... the laser may indeed have been given too much voltage, it was part of a 5v laser show unit that recieved 26v via a broken power supply. The controllers on the chipboard fried but the green seemed to still be working. Are there some controllers on the chip giving the laser a special signal to work or has the 26v managed to get to it and blow it lol.
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Old 07-21-2010, 01:08 PM #4
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Default Re: What happens when a laser 'blows'?

The board that is soldered to the pump diode of the module is there to regulate current to the diode. There is a chance that if the board was given too much voltage you could of damaged the driver board. But because the diode is outputting IR... I have a feeling the pump diode at least is still receiving power. It could how ever be LED'd where it will only output <5mw of light even though you are giving it the correct voltage/current.

My suggestion is, grab a $27 dollar replacement from o-like.

Link: Click here!
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Lasers!
10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
Eagle Pair Red OD4+ goggles
Scopeguy20 Blublockers for 405nm lasers!

* indicates a review has been done, on this item.

Check out my How to Build a Selectable Dummy Load Thread!
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Old 07-21-2010, 01:12 PM #5
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Default Re: What happens when a laser 'blows'?

Ok, thanks. Just to clarify, the board im talking about was the unit's control board for motor / sound-to-light functions, heres an image:

http://i437.photobucket.com/albums/q...d/117_5984.jpg

ill check out getting a replacement, thanks
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Old 07-21-2010, 01:24 PM #6
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Default Re: What happens when a laser 'blows'?

Well like I said before, it seems like the laser is still getting power, are you be able to test for current and voltage output from the board? If they are within acceptable range, all you would have to do is replace the laser, and desolder the board that it comes with and then connect the new laser to the control board (confusing.. but you get the idea).
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Lasers!
10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
Eagle Pair Red OD4+ goggles
Scopeguy20 Blublockers for 405nm lasers!

* indicates a review has been done, on this item.

Check out my How to Build a Selectable Dummy Load Thread!
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Old 07-21-2010, 01:26 PM #7
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Default Re: What happens when a laser 'blows'?

Haha i would, but that little board is smoked too xD i think ill just try and get a 'refund' ! haha
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Old 07-21-2010, 01:32 PM #8
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Default Re: What happens when a laser 'blows'?

I noticed in your other thread you said you connected the laser to a power source and tried to apply power in both polarities.... is this correct? In which case you have defiantly LED'd your laser unless it has a reverse polarity protection, which I doubt in such a cheap device.
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Lasers!
10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
Eagle Pair Red OD4+ goggles
Scopeguy20 Blublockers for 405nm lasers!

* indicates a review has been done, on this item.

Check out my How to Build a Selectable Dummy Load Thread!
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