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505nm and 480nm diode RESULTS

  • Thread starter Thread starter Deleted member 16589
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joeybab3 said:
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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Absolutely. I have a running catalog of each iteration of these "505nm" diodes and their pin out for each one. It is sort of my side line to know as much as possible about these diodes. Send them on. PM me if you need my address again. :wave:

BTW, I now have two brass heat sinks so I can test them without having to press them.
 
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That`s interesting paul! Would be great if you could send it to someone to test the wl. I am wondering if this is a batch that is close to be mass produced or a "unwanted" wavelength for sharp (but hopefully one interesting wl for us)

Singlemode
 
Singlemode Laser said:
That`s interesting paul! Would be great if you could send it to someone to test the wl. I am wondering if this is a batch that is close to be mass produced or a "unwanted" wavelength for sharp (but hopefully one interesting wl for us)

Singlemode
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You may have forgotten, but I have a spectrometer and measured some diodes you ended up with. I am hoping that Joey will send these new ones to me to test so we will all know the wavelengths of this seemingly new iteration of Sharp diodes.
 
paul1598419 said:
You may have forgotten, but I have a spectrometer and measured some diodes you ended up with. I am hoping that Joey will send these new ones to me to test so we will all know the wavelengths of this seemingly new iteration of Sharp diodes.
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You are right! I am waiting for new wavelength measurements!
 
I really like the idea of a ~480nm laser, that sky blue color is otherwise only obtainable by argon right?

likely a stupid question is there any work being done on ~590nm diodes? because I really want a yellow laser that I can actually afford and is stable.
 
I have a 477nm one. I have measured some to 478nm and one at 480nm. The answer to your second question is NO.
 
XenondiFluoride said:
I really like the idea of a ~480nm laser, that sky blue color is otherwise only obtainable by argon right?

likely a stupid question is there any work being done on ~590nm diodes? because I really want a yellow laser that I can actually afford and is stable.
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You can get 488nm with DPSS and OPSL too, but they're even more expensive/uncommon.

Not aware of any ~590nm diodes, except maybe some cryogenic diodes, not practical. Definitely not going to be any cheaper than DPSS 589/593.
 
diachi said:
Not aware of any ~590nm diodes, except maybe some cryogenic diodes, not practical. Definitely not going to be any cheaper than DPSS 589/593.
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^Yes.

I believe member "styropyro" made a YT video where he super-cooled a 635 diode in Nitrogen, and got it down to around the low ~600nm mark. Check it out! :yh:



-Alex
 
Yeah, these aren't new at all. It does show quite convincingly the effect temperature has on LEDs and laser diodes, though. Liquid N2 is not very practical for laser diodes though. Also one should be able to infer from this that heat will shift the wavelength in the other direction. Too bad you can't heat them to thousands of degrees to shift WL.
 
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XenondiFluoride said:
I really like the idea of a ~480nm laser, that sky blue color is otherwise only obtainable by argon right?

likely a stupid question is there any work being done on ~590nm diodes? because I really want a yellow laser that I can actually afford and is stable.
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590 nm ain't yellow. 577 nm is though.
 
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