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

How to Register on LPF | LPF Donations

Hey you guys can I ask you something?

  • Thread starter Thread starter Deleted member 57455
  • Start date Start date
D

Deleted member 57455

Guest





Really can't tell as the pic's are blurry but it does look the one emitter wire has burnt off the pole.
Also just to add that a red 650nm laser beam even at 150mw is not bright. A 650nm beam is about 5% as bright as a green 532.
 
Hi
The Mitsu 500 diodes can do over 1W easy and
Last. They are very tough
Rich:)
 
Lifetime17 said:
Hi
The Mitsu 500 diodes can do over 1W easy and
Last. They are very tough
Rich:)
Click to expand...
:)For about $3 more it's really something to think about. Still a 637 or 638nm diode will need to be run hard for a visible beam..
 
That Mits diode is the ML501P73. It is quite bright at 1+ watts, but it has horrible divergence specs. It looks more like a line than a dot in beam profile.

The LPC840 is a 650 nm diode, but it can be driven to produce 400 mW of optical power. It is also a single mode diode, so the beam specs are very good.
 
Lifetime17 said:
Hi
The Mitsu 500 diodes can do over 1W easy and
Last. They are very tough
Rich:)
Click to expand...
Ik Rich but sadly I was under the impression that red diodes need 5+ volts so I fried my Mitsubishi 150mw one is it possible to bring it back by soldering the tiny broken wire?
 
No, that's not possible. Once it is toast it is toast. Red diodes have a lower Vf than many other laser diodes. Keep that in mind. Also, these need to be driven with a constant current driver or they will fail. I hope you aren't driving them off a power supply or battery directly.
 
Last edited:
paul1598419 said:
No, that's not possible. Once it is toast it is toast.
Click to expand...
paul1598419 said:
No, that's not possible. Once it is toast it is toast.
Click to expand...
Ok I'll just hook it up to 25 v for its final goodbye ( my 2-25 volts homemade driver https://laserpointerforums.com/threads/help-me-choose-the-right-driver.104475/ scroll all the way to the bottom)
Edit: did not do that at all is this a special case of a semi-burned diode or smt bc the brightness does not seem like a burned one to me
 
Last edited by a moderator:
Hi, Just buy the driver from DTR I use the flex drive V5 for the Mitsu 500 and they just keep going and lasting. By purchasing the right driver you will save on diodes . Do not forget your ESD protection and safety glasses,
Rich:)
 
Lifetime17 said:
Hi, Just buy the driver from DTR I use the flex drive V5 for the Mitsu 500 and they just keep going and lasting. By purchasing the right driver you will save on diodes . Do not forget your ESD protection and safety glasses,
Rich:)
Click to expand...
Hey Rich the driver performs very well and I also don't have the 30+14 USD for shipping. It was my fault for burning the diode my driver outputs a constant voltage of 2-25v and a Constant current of 0-2Amps(measured with a very good multimeter. It was my fault bc I did not look at the spreadsheet and fed the diode 4,5 or more volts. A lesson learned would you say. but still, I will buy the sharp 700mw red laser diode from dtr when I have the money.
 
Hi,
ok the shipping depends were you are from on the continent . I must have missed that sorry.

Rich:)
 
Lifetime17 said:
Hi,
ok the shipping depends were you are from on the continent . I must have missed that sorry.

Rich:)
Click to expand...
Rich it's ok don't be sorry. I am located in Greece and I do not really need an other driver as I am not really concerned about size and testing it on a burned mitsu 150mw it performs well. https://ibb.co/kyxgvb3
 
Hi, Ok I hope it all works out for you , looking forward to some beam shots.

Rich:)
 
My want to add your location into your personal profile.
We need that to give you better advice.. btw did you make an 'intro' thread in the welcome section..if not make one now and put Greece in your title so others from there can network with you--any member owning a power meter will your lasers free.
 
You must log in or register to reply here.


Back
Top