20 WATTS of red? We'll see...

MarioMaster · Jun 23, 2009

COHERENT 632nm 20W LASER DIODE BAR HIGH POWER DPSS NEW - eBay (item 110401525661 end time Jun-22-09 15:59:32 PDT)

This could very easily be a mixup or mislabel, so I'm not keeping my hopes up too much.

However - if by some miracle this diode array is what the auction claims it to be.... well dang :gun:

Thanks goes out to BlueFusion who originally notified me of this deal, and he will be getting one of the diodes provided he can pay for it.

So now, I play the waiting game. 2-5 days until my bank account withdrawal processes and I can pay the guy.

MarioMaster · Jun 23, 2009

reserved for arrival pics and testing

lazorman · Jun 23, 2009

this would be a GREAT deal if its real... looking forward to it

pseudolobster · Jun 23, 2009

I'm confused... It says DPSS, yet as far as I can tell 632nm is not a DPSS color, nor do I see any crystals in the picture... You mention "array", yet that looks like a single diode... What's going on? Where am I? How did this get here?

MarioMaster · Jun 23, 2009

pseudolobster said:
I'm confused... It says DPSS, yet as far as I can tell 632nm is not a DPSS color, nor do I see any crystals in the picture... You mention "array", yet that looks like a single diode... What's going on? Where am I? How did this get here?

Haha, yeah there's a good chance this will just end up being an IR diode in which case it will be sent back, BUT - he sells other diodes like this labeled correctly (808nm and such) so who knows.

It's an array because although it is one unit, it actually contains a bunch of little diodes inside (multimode) much like my 60 watt Coherent IR diode array.

k1kb0t · Jun 23, 2009

Ask him if the diode really is 632nm.

Jon

MarioMaster · Jun 23, 2009

k1kb0t said:
Ask him if the diode really is 632nm.

Jon

The auction plainly states that the emitter has a central wavelength of 632nm. If the diode isn't really red then I doubt he knows it.

Emc2 · Jun 23, 2009

lazorman said:
this would be a GREAT deal if its real... looking forward to it

It would be cool but we could not afford it, it would probably be more than $7000.00 for 20 watts. Heck the green DPPS 2~3 watt lasers are 3-4 thousand. 635nm lasers are expensive.

Cyparagon · Jun 23, 2009

The beam will be anything but stellar.

If you use it as a flashlight, it's 3300 lumens though

Benm · Jun 23, 2009

I seriously doubt its a visible red diode bar, probably a mislabeled 808nm... but if its for real you'd have an amazing deal on your hands.

Low-Q · Jun 23, 2009

MarioMaster said:
COHERENT 632nm 20W LASER DIODE BAR HIGH POWER DPSS NEW - eBay (item 110401525661 end time Jun-22-09 15:59:32 PDT)

This could very easily be a mixup or mislabel, so I'm not keeping my hopes up too much.

However - if by some miracle this diode array is what the auction claims it to be.... well dang :gun:

Thanks goes out to BlueFusion who originally notified me of this deal, and he will be getting one of the diodes provided he can pay for it.

So now, I play the waiting game. 2-5 days until my bank account withdrawal processes and I can pay the guy.

This is a 808nm diode. I don't know about that high power 632nm lasers for DPSS at that cost. So it is most likely a 808nm laser.

Vidar

Laser_Ben · Jun 23, 2009

This is not a red laser, supertechshop is a known unreliable seller of laser goods. Coherent never made a 20W bar at this wavelength. They made a series of 3W bars in a FAP style package, the problem was, they were so temperature sensitive, they could not be sold. Variations of 10ths of a degree Celsius could kill the diode.

The only good thing I see about this diode is the fact that the shorting screw is still in place. The bad thing is that it is not new, the cathode connection screw has been used, by the look of the hex. There is also a washer mark from when it was bolted down. Coherent tests the diode in large arrays, they are clamped down to a water cooled block using a plastic block on each side, this diode was installed in a product prior to being sold.

MarioMaster · Jun 23, 2009

Laser_Ben said:
This is not a red laser, supertechshop is a known unreliable seller of laser goods. Coherent never made a 20W bar at this wavelength. They made a series of 3W bars in a FAP style package, the problem was, they were so temperature sensitive, they could not be sold. Variations of 10ths of a degree Celsius could kill the diode.

The only good thing I see about this diode is the fact that the shorting screw is still in place. The bad thing is that it is not new, the cathode connection screw has been used, by the look of the hex. There is also a washer mark from when it was bolted down. Coherent tests the diode in large arrays, they are clamped down to a water cooled block using a plastic block on each side, this diode was installed in a product prior to being sold.

Yes I'm quite aware that there is a very good chance that this is not a red diode. However I'm no longer inclined to trust your information either.

This will be a very open and shut case. The diode will either be red or it won't. Until it arrives and has a few volts run though it, nobody can say for sure.

Laser_Ben · Jun 23, 2009

And why is this?

MarioMaster · Jun 23, 2009

Just got off the phone with Coherent, as it doesn't have any kind of model or marking on it, they can't say for sure what it is. BUT - they did say there are several possibilities of what it could be, and 20 watt diode bars in the red wavelength area have been made by Coherent. At least that's what I was told by the representative I talked to.

-edited for clarity

thesk8nmidget · Jun 23, 2009

well only time will tell im hoping its red. if it is shine it over texas and let me check it out

20 WATTS of red? We'll see...

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