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Old 08-23-2013, 03:18 AM #209
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Default Re: GB: 473nm diode information / giveaway

I haven't been keeping up on this lately because school has been killer, but it's great to see you have this diode up and lasing! You are really pushing that thing! I only have mine at 79mA.

I still need to build my other diodes into pointers and sell them off here. I need some money for school...


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Old 08-23-2013, 03:31 AM #210
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Default Re: GB: 473nm diode information / giveaway

255mA is the threshold for the 480nm line to appear, they are noticeably different in hue to my eye. The combined wavelengths are only slightly visually different from 473nm.

The second line changes wavelength quite a bit from 255-300mA

How am I to proceed with the spectrometer readings? Take note of both lines?

I am really confused as to why the diode is doing this. I guess that's why they don't rate these diodes for use over 150mA


Photos taken at 310mA, the diode is most definitely lasing, and going strong.

This one visually shows the different wavelengths, the hue is off though. The left line looks identical to 473nm.


Photo #2, clearly showing that there are two wavelengths.


I can find a DSLR this weekend and get some good photos shot in raw to show the differences.

Last edited by ARG; 08-23-2013 at 03:49 AM.
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Old 08-23-2013, 03:37 AM #211
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Default Re: GB: 473nm diode information / giveaway

Don't hurt my diode!
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Old 08-23-2013, 03:39 AM #212
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Default Re: GB: 473nm diode information / giveaway

That's sick!
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Old 08-23-2013, 03:54 AM #213
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Default Re: GB: 473nm diode information / giveaway

Okay, we now know that this diode is most certainly producing two coherent wavelengths, about 5.5nm apart.

Now, to find out how and why. Zraffleticket found a small yellow line in his 520nm diode laser, but it was very weak. These two lines are of similar intensities. What is going on here?
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Old 08-23-2013, 04:03 AM #214
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Default Re: GB: 473nm diode information / giveaway

wanna kill a 520 again? I'm a DPSS guy so I unfortunately cant offer much help as to why a diode is lasing two lines, both nearly as strong as the other. That shouldnt happen haha
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Old 08-23-2013, 04:10 AM #215
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Default Re: GB: 473nm diode information / giveaway

Did you say yellow line in 520? Dafuq? We need to talk more often Raffle. I need to know about these things

I have an ML collection to feed!
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Old 08-23-2013, 04:30 AM #216
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Default Re: GB: 473nm diode information / giveaway

Can't kill a 520, they just stop lasing

Anyway, after letting the diode cool down the efficiency is dropping past 290mA, so I'm calling it quits as no one wants to see this diode die.

https://docs.google.com/spreadsheet/...VE&usp=sharing

Everyone satisfied with that data?


Also, from a cold start at 300mA the diode peaked 50mW

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Old 08-23-2013, 04:31 AM #217
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Default Re: GB: 473nm diode information / giveaway

Very cool. Cool indeed. I am ^
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Old 08-23-2013, 04:47 AM #218
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Default Re: GB: 473nm diode information / giveaway

That's incredible! :hopehewins:
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Old 08-23-2013, 06:02 AM #219
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Default Re: GB: 473nm diode information / giveaway

Draw my number master of the games! DRAW IT!!!!!
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Old 08-23-2013, 01:02 PM #220
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Default Re: GB: 473nm diode information / giveaway

Yeah, I think its been pushed far enough. You need to post a master list of every bodies ticket nums before you get dave over here with a drawing so there won't be any confusion about who won.

Even though we all want the diode to live, I'm glad you didn't puss out and take it easy because of the giveaway. We never would have known about the second line!
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Old 08-23-2013, 04:27 PM #221
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Default Re: GB: 473nm diode information / giveaway

Alright

Going to wait till the weekend when I can get some better photos before we draw, gives people time to request other tests as well before we call it quits
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Old 08-23-2013, 09:30 PM #222
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Default Re: GB: 473nm diode information / giveaway

Ok, that second line is totally freaking beautiful. Major props to you ARG for not being scared to really test the diode. This test makes me desire seeking out more of these diodes however unlikely that may be.

On another note I am freaking loving this system of GB diode tests. Buy a diode, test it extensively and raffle it off. I think we should do this for more diodes. Data this accurate would still be invaluable for diodes that we use on a regular basis. Then lucky people would get free diodes, the site would make more donations from extra proceeds(extra could even be added in intentionally), and our understanding on the operating specs of diodes will become greater.

Also, thanks again ARG for dedicating the time to conduct such tests.
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Old 08-23-2013, 09:41 PM #223
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Default Re: GB: 473nm diode information / giveaway

Awesome Job ARG Multi-Line diode, very cool

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Alecto 405nm
Tisiphone 445nm
Megaera 660nm
Gram (Wrath) 445nm ~ an SBA Lasers Custom Build (polished Kryton host 9mm 445nm)
Malice ~ an SBA Lasers Custom Build (Sinner MS-SSW host PL520)
MXDL host 56mw Fasttech green Pman custom build
B&D host "Dominator" 103mw Fastech green Pman custom build
Gordon host 33mw Fasttech green Pman custom build
Dr. Evil & MiniMe (SL Twintask host 660nm Mrcrouse HS & FR - in dev)
Daguin Mini Red
Deadeye Lasers Sirius 445nm Blue
AnselmoFanZero MLG-01 445nm Blue
Pman Silver Pen 642nm


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Old 08-23-2013, 10:52 PM #224
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Default Re: GB: 473nm diode information / giveaway

Great work indeed!

I'm curious as to why the data only goes to 270mA if you tested to 310nm. As for the lines, I'd list them both on the data. Which line changes more, then 473nm or the 480nm?

Did you datalog the 50mW@300mA run? how long did the higher power last?

Some beamshots of the combined lines would be cool!
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405nm: NewWish (29.1mW avg|5mW rtd) | Dilda (81.5mW avg|200mW rtd) | 501B by Blord (633mW pk)
low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

5W Ophir LPM

HV: Flyback, Plasma Speaker, The Arcsynth and SSTC
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