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Anyone have an O-Like 50mw 450nm laser pen

Super Critical

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joshshermannn1

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go for it :p post a review if you do it.
i dont have it personally, but it seems legitimate since the diode is $79, and i typical new wish pen can be $7
i would be surprised if its unstable since its single mode :p
 

InfinitusEquitas

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Well I'll be....

Crap, I might just have to break my o-like embargo after all:undecided:

+1 to both of you for finding these.
 

joshshermannn1

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also a great price on the new wish pen :p $3
how much do single mode 445nm diodes usually go for?
 

Super Critical

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This is a 450nm diode and not a 445nm diode which has a higher minimum current. I got them confused. I will post a review when I get this laser.

Here is a list of visible diodes I found on another thread.


I thought this could be an interesting (and colorful) thread to keep updated. The idea is to track current diode laser wavelengths.

My proposed guidelines:
- Only visible wavelengths from 390 to 750, and only pure diodes, not DPSS.
- Cite sources unless it's a common wavelength
- Package type (9mm, 5.6mm, C-Mount, etc) isn't important, but something clearly outside the realm of portability doesn't count.
- If wavelength is given as a range, take the midpoint, and if that gives a .5, round up.
- Differentiate between (C) common OR cheap, (E) exists but impractical or costly, and (R) rumoured or anounced.
- If a particular wavelength has more than one entry, in different (C,E,R) letter categories, the most favorable letter will be indicated (C>E>R)

I'll give this a start:
405 nm - (C) - Multiple manufacturers, Sanyo, Mitsubishi, etc
415 nm - (E) - Roithner RLT415-200PMG
445 nm - (C) - Nichia (they specify wavelength as "440 to 455", but these diodes are most commonly referred to as 445)
450 nm - (E) - Soraa Announcement, and Osram Available
473 nm - (E) - Nichia NDHA210APAE1 (likely same as Thorlabs L473P020MLD)
488 nm - (E) - Nichia NDB7352 (likely same as Thorlabs L488P060MLD
510 nm - (E) - Nichia Announcement
523 nm - (R) - Soraa Announcement
531 nm - (R) - Sumitomo Announcement (2009)
622 nm - (E) - LDX Optronics LDX-2106-622
635 nm - (C) - Multiple manufacturers (through to 642nm), Hitachi, Sanyo, Opnext, etc
657 nm - (C) - Multiple manufacturers
670 nm - (C) - Multiple manufacturers
685 nm - (C) - Eudyna FLD6A2TK

It will sure be nice to see some of those Rs become Es, and Es become Cs :)
Lets keep this updated as news pops up!
 

Super Critical

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This uses the OSRAM PL 450 diode. I think it's a second generation Osram 450 diode that replaces the PLT4NSB.
 
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bitmerge6502

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i don't have one, but i just heard about them &sounds perfect for rgb mixing. this is next on my list. thanks for the diode chart also. I'm gonna research these. i didn't think there was such a thing as a 532 or 473 diode without dpss. they're sure to be expensive if that's what they are. also i don't think Nichia makes a single mode 445.
 

bitmerge6502

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Crypes! ! that thorlabs 488 is over $3k! I'll wait another decade when they start putting them in everything (that's how long i waited for blue & white LEDs to get cheap). it's nice to know the technology exists. just goes to show, you can produce light emmiting semiconductors in just about any wavelength.
 




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