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



Plp-520b1

deadshadow

New member
Joined
Feb 21, 2016
Messages
475
Points
0
i just saw this diode on ebay, it is an osram diode rated at 90mw,the seller has a messed up diode package as it list this both as a 5.6 and 3.8mm diode but it has a 480ma working current which looks very promising if it is a single mode.

has anyone tested this?


https://www.ebay.com/itm/Osram-PLP-520B1-520nm-90mW-Green-Laser-Diode-TO18-5-6mm-520nm-Laser-1-pcs/141871902743?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=20160727114228&meid=cde0236e4961492f95219f2aa47e9eda&pid=100290&rk=3&rkt=4&sd=112730183385&_trksid=p2060778.c100290.m3507


edit: it listed on DTR'S page also,looks like i have missed it,sorry about that.
https://sites.google.com/site/dtrlpf/home/diodes/plp520-b1-120mw-520nm-laser-diode
 
Last edited:

Lifetime17

Well-known member
LPF Site Supporter
Joined
Dec 15, 2014
Messages
5,074
Points
113
Hi,
Its a multimode and i think its a 5.6m i had built quite a few and these are really nice diodes with a great dot size for a multimode. Oh and DTR has a few left short inventory so get them now from Jordan. And also 450 to 550mA this can take..

Rich:)
 
Last edited:

BowtieGuy

Well-known member
LPF Site Supporter
Joined
Oct 14, 2012
Messages
5,645
Points
113
Isn't that the same one that DTR sells, Here?

Edit: You beat me to it again, Rich! :yh:
 
Last edited:

deadshadow

New member
Joined
Feb 21, 2016
Messages
475
Points
0
Hi,
Its a multimode and i think its a 5.6m i had built quite a few and these are really nice diodes with a great dot size for a multimode. Oh and DTR has a few left short inventory so get them now from Jordan.

Rich:)
does this have the same divergence as pl520b?
Isn't that the same one that DTR sells, Here?
yea,sorry i saw that after i posted it
 
Last edited:
  • Like
Reactions: GSS

ZRaffleticket

Well-known member
Joined
Feb 4, 2010
Messages
2,989
Points
113
very, very slightly worse. You'd only notice if you were looking for it.
 

Lifetime17

Well-known member
LPF Site Supporter
Joined
Dec 15, 2014
Messages
5,074
Points
113
Isn't that the same one that DTR sells, Here?

Edit: You beat me to it again, Rich! :yh:
Hi BT,
Yes they are the same at least Jordan will stand behind his products and you don't have to wait 3 or 4 weeks to get it. Buy it from Jordan , keep it in the family.

Rich:)
 

BowtieGuy

Well-known member
LPF Site Supporter
Joined
Oct 14, 2012
Messages
5,645
Points
113
does this have the same divergence as pl520b?


yea,sorry i saw that after i posted it

Hi deadshadow, Here is a link to a build I made with the Plp-520 B1; there is a side by side pic in it showing it compared to a 532nm at about 30'.
I don't have the divergance numbers, but it has a very good beam/dot for a MM diode.
 
Last edited:

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,811
Points
113
Looking at the beam from your 532nm laser, it looks like the divergence is awful for a DPSS laser, Jeff. I can see the beam spreading out, or it is just spread more to begin with. In this comparison, the 520nm looks about as tight as the 532nm from the dot, but it is definitely not Gaussian. I know, it couldn't be.
 

BowtieGuy

Well-known member
LPF Site Supporter
Joined
Oct 14, 2012
Messages
5,645
Points
113
You're right Paul, I had the 532nm beam de-focused in that wavelength comparison pic, it seemed to show the wavelength difference more clearly.
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,811
Points
113
Well, that explains it. Thanks. I was wondering why it looked so bad for a DPSS laser, Jeff. BTW, was finally able to push you to 540K. :yh:
 

RedCowboy

Well-known member
LPF Site Supporter
Joined
Jul 10, 2015
Messages
7,663
Points
113
Last edited:

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,811
Points
113
They are sure proud of that diode! At $95.50, what output can you get? About 200 mW or so? It is rated for 100 mW, so must be somewhere around there. It is a multi mode too?
 
Last edited:

RedCowboy

Well-known member
LPF Site Supporter
Joined
Jul 10, 2015
Messages
7,663
Points
113
It claims to be single mode but the spec sheet has no part number that I could see.
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,811
Points
113
I'm thinking at that power rating it is likely a multi mode. If it is wider on one axis than the other, it is likely not a single mode. The single mode 520nm diodes don't look that way.

You can pick up the Osram 520nm 90 mW diode for $51.29. It will probably perform as well if not better in beam specs.
 
Last edited:

RedCowboy

Well-known member
LPF Site Supporter
Joined
Jul 10, 2015
Messages
7,663
Points
113
Last edited:

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,811
Points
113
If that is it, then that's $60.00. Not nearly as bad as the eBay listing. I wonder why that Chinese seller wants so much for it.
 




Top