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Old 09-02-2017, 09:56 PM #17
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by paul1598419 View Post
So, I was right. The mini plug is another way to power this spectro. Looks like they are using a 12 VDC 750 mA wall wart. Wonder why it is considered a B grade spectro?

BTW, Brad. You have a double post.
I saw, had some network issues on my phone and it posted it twice. Second one is now deleted.


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Old 09-02-2017, 10:25 PM #18
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I've got some serial adapters so should be able to get some testing done when mine arrives. Can anyone link me to the software?

Plus the HeNes and Argon will work for checking calibration.
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Last edited by diachi; 09-02-2017 at 10:26 PM.
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Old 09-02-2017, 10:28 PM #19
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Pm me and I can send you an email with the software and documentation in a few hours when I get off work.
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Old 09-02-2017, 10:44 PM #20
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I was thinking and my conclusion is that the spectro is meant to read back the raman fluorescence of the target, not to wavelength tune the laser. That might be why it has no baffles and a larger range.
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Old 09-03-2017, 12:02 AM #21
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

The spectrometer is linked directly to the output of the laser through a dichro inside the output collimator of the laser. I don't know if these are somehow limited in bandwidth, but I have been told this by others who had been working with them before I ever saw one. The more sources you have outside the 473nm range to test, the better your test of the range will be. HeNes and argons and DPSSLs are all good sources for testing. But, even a 650nm or 660nm direct diode laser will give you an idea how well it can read outside the laser's WL. You wouldn't be able to use them for calibration, but if you have a HeCd and/or multi line argon, these could be used. Also the discharge light from a HeNe could be used if you know the major spectral lines.
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Old 09-03-2017, 02:45 AM #22
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by CynicalBrad View Post
Pm me and I can send you an email with the software and documentation in a few hours when I get off work.

Will rebuild my e-mail server and get back to you... The VM host died the other day and I haven't got around to fixing it...
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Old 09-03-2017, 03:24 AM #23
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by diachi View Post
Will rebuild my e-mail server and get back to you... The VM host died the other day and I haven't got around to fixing it...
You have a PM with a dropbox link with the files as well as my temp placeholder image in a zip archive.


The promised news. The spectro reads but is in some serious need of calibration. my "520" is reading as 589... and yet is not sodium transition amber..
my 477 diode is reading 557.
my spartan "635" is reading 580
seems that a wide range is reading as a rather narrow one to me.
DPSS 473 is reading as 554 so at least the gap between known 473 and my 477 seems about right since I am not pushing the diode hard.

Will have to wait on some input from those more knowledgeable from here on out.
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Last edited by CynicalBrad; 09-03-2017 at 03:47 AM. Reason: Added promised info.
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Old 09-03-2017, 03:32 AM #24
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by CynicalBrad View Post
You have a PM with a dropbox link with the files as well as my temp placeholder image in a zip archive.
Excellent, thanks! Got it, opens up just fine on Windows 10.

Edit:

Quickly came up with a more suitable background image, see attached. Not perfect, but it works.
Attached Thumbnails
B&amp;Wtech 473nm unit / Spectrometer Mods &amp; Info-390to650.png  
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Last edited by diachi; 09-03-2017 at 03:43 AM.
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Old 09-03-2017, 03:44 AM #25
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I thought the output collimator had a prism inside as the image put through is inverted, but it is a dichro on a glass slide. Interesting that it works this way. Figured out that it was the lens causing the inversion. Oops. Oh well. I should know better than to assume something by now. :/
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Old 09-03-2017, 04:02 AM #26
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by paul1598419 View Post
I thought the output collimator had a prism inside as the image put through is inverted, but it is a dichro on a glass slide. Interesting that it works this way. Figured out that it was the lens causing the inversion. Oops. Oh well. I should know better than to assume something by now. :/
Tsk tsk!

I feel bad for not contributing when you guys are figuring all this stuff out.

Mine won't be here for another week or two.
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445nm | Sanwu Laser Pocket Series | 400mW Metered
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473nm | B&W Tek BWB-10-OEM | Ordered
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



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Old 09-03-2017, 04:19 AM #27
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Just think how much you will benefit from the work being done now. I wasn't really interested in the laser part right now as the spectro is what everyone is salivating over. Since I don't have the Rs232 converter yet, it gave me time to look at some other aspects of this laser.

BTW, what did it cost you to ship it to the north pole?
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Old 09-03-2017, 04:45 AM #28
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by paul1598419 View Post
Just think how much you will benefit from the work being done now. I wasn't really interested in the laser part right now as the spectro is what everyone is salivating over. Since I don't have the Rs232 converter yet, it gave me time to look at some other aspects of this laser.

BTW, what did it cost you to ship it to the north pole?

Yeah, hopefully I'll be able to get up and running pretty much as soon as mine arrives.

The way I'm looking at it is, if the spectro doesn't work at least I got a 473nm laser out of it, not why I bought it, but at least it's an added bonus. Maybe these 473s with the pump correction will have better output beams, even if uncollimated. The last one I bought had a nasty beam. If the spectro works then even better!

Hah, north pole. Not quite, thankfully. I'd probably off myself due to lack of sunlight in the winter if I were that far north, winter is already dark enough here... Got another 27.5 latitude to go before the pole! Anyway, it was $38.88CAD for shipping. Not terrible as far as shipping to Yellowknife goes. I've seen people wanting >$20 shipping on single ICs that cost $2. No way it costs that much to ship an IC to here.
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Last edited by diachi; 09-03-2017 at 04:52 AM.
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Old 09-03-2017, 05:43 AM #29
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Oh, that's not too bad at all. Alaskan was keeping away from these because they wanted $68.00 for shipping to Anchorage. I thought it would be at least that much to get it to you.
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Old 09-03-2017, 05:49 AM #30
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by paul1598419 View Post
Oh, that's not too bad at all. Alaskan was keeping away from these because they wanted $68.00 for shipping to Anchorage. I thought it would be at least that much to get it to you.

Is that $68USD? Surprised it's so much more expensive to Anchorage.
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Old 09-03-2017, 05:53 AM #31
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

Quote:
Originally Posted by diachi View Post
Is that $68USD? Surprised it's so much more expensive to Anchorage.
Yup!
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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
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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
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635nm 5mW pointer
635nm 100mW pointer
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650nm 65mW pointer
650nm 380mW 501B
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Old 09-03-2017, 07:46 AM #32
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Default Re: B&Wtech 473nm unit / Spectrometer Mods & Info

I was able to get the seller to agree to ship for "free" if I bought five of them at a time, which I did. So the shipment coming to Paul, as well as the shipments to me in Alaska and Iraq were also sent to me for 199 USD with free shipping. My assumption is they were not selling many at such a high shipping rate and it was worth it to them to start selling them in bulk. I believe they are selling them much faster now, well..... partly because I've been their best customer in awhile having purchased a large number of them..

I'm very happy to see a few members moving forward at getting both the DPSS units and the spectrometer working, at this rate, sharing what you have found will make my getting them working a snap - I emailed the fellow the seller said would send me the software, but nothing back from him yet, might need to get it from one of you guys.
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