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Which Green Laser Should I Get (cost aside)?

Which diode is the best choice (cost aside)?

  • NDG7475

    Votes: 9 100.0%
  • NDG700

    Votes: 1 11.1%
  • NUGM01

    Votes: 1 11.1%

  • Total voters
    9

diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,793
Points
113
Whilst it is possible (more with the red diodes), it is unlikely to cause you a problem. The 520 diode is InGaN and primarily operates in the lower end of the spectrum. It is even less likely that a well made diode will output ir as well as visible. I haven't done too much research into diode technology but I'm sure most diodes don't output ir unless defective.
I don't even see how a defective diode would produce IR (unless it was an IR diode to begin with).

It wouldn't make sense from a design standpoint to have an LD that lases both 520nm and IR (I haven't even seen anything to suggest it has ever been done anyway, even with Multi-Quantum-Well structures or any other InGaAs technology) - unless you needed IR for some reason ... In which case you'd likely just combine an IR diode with a 520nm diode...
 
Last edited:



CurtisOliver

Well-known member
LPF Site Supporter
Joined
Jun 12, 2015
Messages
6,880
Points
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I thought I had seen something wierd like this in the past but it obviously wasn't diodes then. I think I was focusing too deeply on the wavelength bands not on the possibility. Even with my logic it wouldn't be likely with a InGaN diode. :D The red laser diodes can operate in Ir but simultaneously. Luckily I already stated that I haven't researched into diodes too much :)
 

HydroSean

New member
Joined
Mar 25, 2016
Messages
529
Points
0
Yeah diachi that makes sense. Since these are made by that n company they are most likely a single band as they are developed for medical devices/analytical technology et cetera. I just wanted to double check and confirm my safety because I love my eyeballs.
 




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