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Old 08-30-2017, 03:07 AM #673
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Default Re: 505nm and 480nm diode RESULTS

Wow, that's a lot of money. If I had an extra, I'd ask no more than $75.00 for it now, and if a few more showed up probably no more than $50.00. A fair amount of profit is reasonable....IMO.


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Old 08-30-2017, 03:13 AM #674
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Default Re: 505nm and 480nm diode RESULTS

When I sold mine I only aimed to break even. I was happy just having them.

Granted, to a degree everything does have a price. I'd part with the 480 if it got me a 607, so around $2.5k
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Old 08-30-2017, 03:21 AM #675
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Default Re: 505nm and 480nm diode RESULTS

Not exactly. You aren't asking $2500.00 for your 480nm diode. Just a trade for a 607nm. When you sold those diodes I measured for you, didn't you sell the ones Billy has now?
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Old 08-30-2017, 03:24 AM #676
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Default Re: 505nm and 480nm diode RESULTS

Quote:
Originally Posted by badboybilly View Post
477 sharp diode in 12mm copper module with wires soldered. SALE. $500. Au!
That's a bit absurd. Like Paul said making a profit is absolutely fine but there's a limit before it becomes unreasonable. That's not the most attractive price Billy, just saying
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Old 08-30-2017, 03:33 AM #677
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Default Re: 505nm and 480nm diode RESULTS

I think it was only one... I think...

Z,Z,P,B,A,C,RIP,RIP, that leaves two I need to dig in my PMs for.

Edit: I may have sold one to him and traded the other for my 502nm host. So 2 I believe.

Now that said, I still have a spare diode myself, though thats insurance for the 480...
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Old 08-30-2017, 03:45 AM #678
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Default Re: 505nm and 480nm diode RESULTS

We all have spare diodes.
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Old 08-30-2017, 05:20 AM #679
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Default Re: 505nm and 480nm diode RESULTS

BUT for curiosity sake let's say !!!!!


It's funny how people don't take notice! I sold a complete custom with volt panel 477 for under $500. As if I would, this is fun reading though,
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Old 08-30-2017, 03:58 PM #680
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Default Re: 505nm and 480nm diode RESULTS

Here you see fluorescence in an iodine cell at 501.5nm. The light is comming from a laser diode with a free running wavelenght of 502.5nm. With feedback from a grating, the weavelengh cold be reduced to <1MHz and the laser is tunable from 505nm to 499nm (not optimized yet)



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Old 08-30-2017, 04:21 PM #681
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Default Re: 505nm and 480nm diode RESULTS

Quote:
Originally Posted by ElectricPlasma View Post
That's a bit absurd. Like Paul said making a profit is absolutely fine but there's a limit before it becomes unreasonable. That's not the most attractive price Billy, just saying

Has to pay for that big gold ring somehow.
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Old 08-30-2017, 05:17 PM #682
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Default Re: 505nm and 480nm diode RESULTS

@ Singlemode

That is very interesting. You got the line width down to <1 MHz at 501.5nm with diffraction grating tuning? I love everything about it. You only had to tune it down by 1nm to get this result? I know you've said that you have much more freedom of tuning this way, so was there a specific reason to keep it there rather than a different wavelength?
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Old 08-30-2017, 05:45 PM #683
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Default Re: 505nm and 480nm diode RESULTS

Quote:
Originally Posted by paul1598419 View Post
@ Singlemode

That is very interesting. You got the line width down to <1 MHz at 501.5nm with diffraction grating tuning? I love everything about it. You only had to tune it down by 1nm to get this result? I know you've said that you have much more freedom of tuning this way, so was there a specific reason to keep it there rather than a different wavelength?
At 501,5nm is an iodine transition line and I had an iodine filled gas cell nearby. Hitting the line, enlightens the whole room . I can tune my diode from 507.0nm to 498.0nm so far, with only a very simple setup (my test setup) and little optimization.

I am waiting for a new grating to reach the 497.0nm soon.


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Old 08-30-2017, 11:08 PM #684
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Default Re: 505nm and 480nm diode RESULTS

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Originally Posted by Singlemode Laser View Post
At 501,5nm is an iodine transition line and I had an iodine filled gas cell nearby. Hitting the line, enlightens the whole room . I can tune my diode from 507.0nm to 498.0nm so far, with only a very simple setup (my test setup) and little optimization.

I am waiting for a new grating to reach the 497.0nm soon.


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Oh, okay. So that glow is because of the iodine transition line you are introducing into the gas filled structure. That is quite bright. Can't wait to see your new setup with the new grating. I know you are interested in 497.0nm for something, but either can't remember what atomic transition is there or you never said.
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Last edited by paul1598419; 08-30-2017 at 11:09 PM.
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Old 09-01-2017, 10:47 PM #685
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Default Re: 505nm and 480nm diode RESULTS

Just got the brass TO-18 laser diode module that is a temporary module for testing laser diodes. It came with an AR coated 2 element lens in a brass lens housing. I chose 505nm to 550nm for AR coating as it is as close as I could get to the diodes we are seeing now. RA_Pierce also sent me the housings out of some 532nm pump diode's housings which can also be used for this purpose, but don't have a lens capability. They hold either TO-18 or TO-5. So, no more testing bare diodes.
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520nm LaserLands pointer Measures 510nm
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532nm 189mW pocket lab laser
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Old 09-16-2017, 03:44 AM #686
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Default Re: 505nm and 480nm diode RESULTS

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Originally Posted by paul1598419 View Post
I'm sorry, Joey. I meant the micro-printing around the diode's window. You should find one of these three numbers. You will have to use some sort of magnification to read it, but that will tell you which of these three diodes you have. And they are all different.

That linear driver that BowtieGuy linked me to is called the "Blitz Linear Driver" and is on Survival Laser's website.
Sorry for the lack of responses on all my posts, I'll be updating a few today. I just got in a few diodes that say "SB147E891" on the can. It doesn't seem like that matches the other ones you posted but I guess the sb147ec91 would be closest.
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Old 09-16-2017, 04:33 AM #687
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Default Re: 505nm and 480nm diode RESULTS

It's impossible to say where they would measure as that is a new number. Where did you get them? Just wondering as we might be seeing more of them.
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445nm 2.2 watts Nichia MS Envy

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477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
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Old 09-16-2017, 04:50 AM #688
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Default Re: 505nm and 480nm diode RESULTS

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Originally Posted by paul1598419 View Post
It's impossible to say where they would measure as that is a new number. Where did you get them? Just wondering as we might be seeing more of them.
These were from the same seller as the 488s, "Dora" from "dongguan laser". Maybe I'll have to send some to you again for testing if you are willing.
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Last edited by joeybab3; 09-16-2017 at 04:51 AM. Reason: For testing
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