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The Zeus are here!

Snecho

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Thank you Snecho.

You make it sound like I am leaving the forums, that’s not the case, I will be very much around. Just not posting questions that have been answered ad-nausea.

Ok while you are very new I guess but, I am now more familiar with the search options, and I don’t want to bore the knowledgeable regulars with stuff I can now find. But, I’ll won’t posting as much, only when I think I can contribute, like I did this afternoon. Or I get really stuck.

Having ready build powerful lasers and building one yourself is a different thing altogether, and If I can’t find the low power diodes, I will more likely pull them from cheap units. There are things that can only be learnt with practice, and I don’t want to burn anything or injure myself when things inevitably go south while I work and learn.

Cheers!
Sounds good man!
 



paul1598419

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There are plenty of under 5 mW diodes. In red there is the ML101U29 that is under $3.00 each on eBay. You can get ten for something like $20.00 to $25.00. We have over driven them to 200 mW, but they were meant as CD player diodes. You can drive them under 5 mW as their threshold is quite low.

Edited for spelling error.
 
Last edited:

Snecho

Active member
Joined
Oct 2, 2019
Messages
113
Points
28
There are plenty of under 5 mW diodes. In red there is the ML101U29 that is under $3.00 each on eBay. You can get ten for something like $20.00 to $25.00. We have over driven them to 200 mW, but they were meant as CD player diodes. You can dive them under 5 mW as their threshold is quite low.
Oh ok. I was just going by jnrpop's list of laser diodes thread. Thanks for the info Paul.
 

Lifetime17

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You have any with Ophir heads Paul?

Psst, there is a certain member selling a very nice Ophir LPM here that looks appealing to me but I'm not 100% :)
Hi, The member is Brendon with the LPM for sale, I think it was said it was made by Offroadfreak another member. If you buy an LPM from Jerry ( J.Bauer Electronics ). then buy an Ohir head it must be sent to Jerry for calibration to work properly with his LPM.
But Jerry make great head units and response time is quick. I have 3or4 of jerry's units , The 7W version I have has data logging to were the RTA10 does not .He even has a small 9Volt operated unit that measure up to 200mW' and is used with a DDM for read out.
Rich:)
 

ManCave

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Oct 28, 2019
Messages
96
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33
There are plenty of under 5 mW diodes. In red there is the ML101U29 that is under $3.00 each on eBay. You can get ten for something like $20.00 to $25.00. We have over driven them to 200 mW, but they were meant as CD player diodes. You can drive them under 5 mW as their threshold is quite low.

Edited for spelling error.
Thank you Paul.
I am a bit of a hoarder and have quite a few portable CD players in the attic dating back from the 80’s. Also, even more computer cd readers/writers from the 90’s and onwards. I guess I can always mine a few from that stock to start with.
Cheers.
 

paul1598419

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Thank you Paul.
I am a bit of a hoarder and have quite a few portable CD players in the attic dating back from the 80’s. Also, even more computer cd readers/writers from the 90’s and onwards. I guess I can always mine a few from that stock to start with.
Cheers.
That is always an option. I like using new diodes, and considering the price of these, you don't need to spend much to get a few unused ones.
 

ManCave

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That is always an option. I like using new diodes, and considering the price of these, you don't need to spend much to get a few unused ones.
Unfortunatel, they’re not easily available in the u.k... so, more import charges which I hate to pay just on principle. I literally have like maybe 15 cd-rw’s and about 5 portable cd players. I think It will be fun to pull them, and not too upsetting when I fry them experimenting. 😉
 

Snecho

Active member
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Oct 2, 2019
Messages
113
Points
28
Unfortunatel, they’re not easily available in the u.k... so, more import charges which I hate to pay just on principle. I literally have like maybe 15 cd-rw’s and about 5 portable cd players. I think It will be fun to pull them, and not too upsetting when I fry them experimenting. 😉
My first attempt as lasers years ago was an RW laser diode. I failed miserably lol. 🤣🤣
 

ManCave

Active member
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Oct 28, 2019
Messages
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My first attempt as lasers years ago was an RW laser diode. I failed miserably lol. 🤣🤣
Yeah, I can envision many catastrophic failures before I reach my eureka moment. I though I might have to buy a few cheap donor lasers to begin with, but then I remembered what I have in the attic. So, I think those will be a good starting point.
Once I unlock the secrets of building a good stable unit, I’ll start forking out money for better quality diodes.
Cheers.
 




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