Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

How to Register on LPF | LPF Donations

Laserlands 5mW 520nm

  • Thread starter Thread starter Deleted member 17304
  • Start date Start date
^Yeah!

In Europe, due to the Gulf Stream you can easily finds town that are driveable as far North as 70°N latitude. It still gets pretty chilly in mid-winter, but nowhere near what is found back in N.A :(

-Alex
 





How many lines did you use to calibrate your spectrometer, diachi? If it was four, that 513nm might not be that accurate. The more lines you use the better your calibration. Also, don't expect to get anything close outside your two farthest lines.
 
paul1598419 said:
How many lines did you use to calibrate your spectrometer, diachi? If it was four, that 513nm might not be that accurate. The more lines you use the better your calibration. Also, don't expect to get anything close outside your two farthest lines.
Click to expand...


I used 473, 488, 532 and 633. Those are the only stable/known lines I have at the moment. The 513nm and 525nm readings I got are at the least, fairly close, just going by colour comparison with 532nm. Need more DPSS/gas lasers to test these things (anyone want to lend me an Ar/Kr or a 561/589/593? :D). May experiment with getting other lines out of my bigger HeNe such as 612nm or 594nm using an external mirror, although chances are slim that it'll work.
 
Last edited:
I have those lines as well, but am using some neon ones to fill in the reds. If you can find the lines in a 632.8nm HeNe discharge light, I'd use that.
 
paul1598419 said:
I have those lines as well, but am using some neon ones to fill in the reds. If you can find the lines in a 632.8nm HeNe discharge light, I'd use that.
Click to expand...

I did take a look at that, but I'm not sure which spectral lines to look for, I need to find a better list of the lines to reference.

That said, I did look at the spectral lines from the discharge of my HeNe with the spectro and it's fairly close, at least for the lines I know.

E9n4Tlx.png


543 is dead on, 592 is a little out, 612 is dead on, 633 is dead on (I know it's 633.8, but I calibrated it to 633). IIRC 500nm is dead on too. I may need to revisit it with the updated software (zoom function would help tremendously) and a list of the major spectral lines.
 
Last edited:
Your 633nm is not 633.8nm, but 632.8nm. That will throw you off a full nm. I'd let it run for awhile to stabilize before using it, though.
 
paul1598419 said:
Your 633nm is not 633.8nm, but 632.8nm. That will throw you off a full nm. I'd let it run for awhile to stabilize before using it, though.
Click to expand...


Woops, yes, right you are. Knew there was a reason I calibrated it to 633 and not 634. Blame the beers I had last night. :D
 
You must log in or register to reply here.


Back
Top