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Hi, Sorry if this is a noob question, but this may be a simple question with a simple answer but I cant seem to find the answer. Ive been an electronics hobbyist for around 8 years (lasers for around 3 years) and have not actually messed around with constant current supplies :thinking...

Oh... Thanks!

Hey everyone, So I have built my 1 Watt laser, and have seen that on laser pointer saftey that handheld class IV lasers are legal so long as they have the required safety features. If im not mistaking, most home built lasers have no safety features, including my of course (just a simple rear...

So I can get perfectly good temperature reading from a TMP36 temperature sensor (its in a small TO-92 package). And I noticed that most LMPs go by the heat generated right? So that makes me wonder if I can use the TMP36 to sense heat and get the mW off that. The only problem is, I dont know...

OK I will try that thanks :) One question, can this cause a premature diode death because of the reflected light?

Thanks for the reply, I have wiped the diodes' window but nothing happened, I guess it could just be a imperfection in the glass because it was a cheap diode ($16, part number NDB7412T). Even for that cheap it seems to run happily at 1 watt :yh: It doesnt really even get that warm, but it...

Technically, there is no safe laser. Every laser is dangerous if you take a direct hit to the eye long enough. To answered you question about a laser that doesn't burn, and the least dangerous but still be able to see the beam would be a 5mw green. You will not find a 5mw blue ie. 445nm, its...

Milroy, Pennsylvania :D 17063

Hey everyone, So I've been messing around with lasers for only about 2-3 years and i have noticed that on some of my diodes i get different patterns. I understand that on 445nm lasers that the output is rectangular with bars, and 650nm have a nice circular output. But sometimes on the diodes I...

Yeah, just got a email back from asking why they stopped selling diodes. Here is the reply Unfortunately this is not the case. If we sell diodes or complete kits on the US store the FDA will declare everything we sell to be “laser products” and therefore regulated. We have been through this...

Thanks for your reply :) Does that mean that its perfectly legal for the shipment of lasers diodes? I wonder why survival laser wouldn't have diodes on their US site. Oh well, I'll have to order one and see if comes through I guess :D

Hey everyone, So I have found my new website for getting laser parts called survivallaser.com and as I was going through their website, I noticed that there was a separate site for people in the US. I went there and noticed that there were no longer diodes or complete lasers. Then I realized...

Hi all, I was wondering how legal it is to locally sell a like within a town not shipping it anywhere. Im asking this because im thinking about selling a 300mW red 650nm im made recently, to a friend. We've been friends since elementary school and he's responsible enough to trust him not be...

I would like to say that I did measure the batteries and they were 1.3 each. A look at the datasheet (I'm sure you didn't look at it...) shows that the max reverse voltage is 2 volts. I'm pushing 2.6 through it. That should be plenty of overvolt to blow it. And the measured current was less than...

This is sort of out of the blue, but I have to say how impressed I am about this red laser diode (RLD65PZB5) I say its hardy because for one I'm direct driving this puppy. I'm over currenting maybe 50-100mA off of two AAA in series directly to the diode. I don't have my multimeter with me to...

so here is my setup and by the looks of it, it doesn't seem like its going to work. i salvage the laser 301 host and put the driver and aixiz in the 301 then i used the case as negative (I also assume bridging the 7 & 8 pins was not a good idea) then the positive of the driver is connected to...

Hey guys, i was wondering if you could help me determine if the driver I use is defective. Story: I bought 3 laser diodes from diy-lasers.com and they sent me 5 and charged me for the 3 then I bought a little 4 dollar driver. So there was a chance that there could be problems. Anyway I...

Sooo I ended up useing a epoxy coated inductor that measured out at 1 ohm would that be alright reading wise ps: this is just for making a 50-100mW laser so i dont need a beefy resistor.

how many diodes are used for a 650nm red laser LD

thx do the swirls mean it pretty much dead anyway? and also I just got my first red laser diode out of a computer burner any pointers on how to build off of it to make a laser. I also got the PSU for a power supply if it will help.