Project for beginner

[VernoxVernax]

I'm excited FOR you lol. But yes, that heatsink is good.

As far as the pill, I did some research and in the future, you can get either the drilled or driver heatsinked pill to use a different (rectangular) driver than the Survival Lasers ones that are round. Like DTR's high quality, fine tuned drivers This would all greatly increase your options in terms of diodes and power.

Good to know. Thank you very much!

 

[Snecho]

Good to know. Thank you very much!

Sure thing.

One thing that I've been wanting to tell you, that diode is an Open Can Diode. if you as much as touch the laser cavity or even get a speck of dust on it, it's now the worlds smallest paperweight. Probably one of the worst diodes as a first ever build to be honest in this regard.

 

[VernoxVernax]

Sure thing.

One thing that I've been wanting to tell you, that diode is an Open Can Diode. if you as much as touch the laser cavity or even get a speck of dust on it, it's now the worlds smallest paperweight. Probably one of the worst diodes as a first ever build to be honest in this regard.

Oh. Aha. Very cool. So what kind of lenses do I need? I thought choosing the copper diode model with the half back would keep it secure enough.

 

[Snecho]

Oh. Aha. Very cool. So what kind of lenses do I need? I thought choosing the copper diode model with the half back would keep it secure enough.

Well okay then.

So next, did you order the diode yet? I assume you're buying it from DTR?

 

[VernoxVernax]

Well okay then.

So next, did you order the diode yet? I assume you're buying it from DTR?

I have already. Thats the problem. Since 2 days people have been telling me than my configuration is fine, and now after I bought all the parts, I suddenly get the notice that my diode is open and die instantly.

 

[Snecho]

I have already. Thats the problem. Since 2 days people have been telling me than my configuration is fine, and now after I bought all the parts, I suddenly get the notice that my diode is open and die instantly.

Well no one just had the chance to mention it. In fact, everyone kept suggesting you slow down a bit but you ordered everything anyway. I know it's super exciting to build your own laser for the first time but slow and steady wins the race.

What's done is done. The diode won't die instantly you will just have to be really really really careful with it.

I'll go ahead and summarize your parts list:

"trephanation showed me this awesome host bundle "bargain". I configured it with host opion C6. A 1.25A driver, Black heat sink and a standart driver pill. As the diode I am choosing the Mitsubishi 638nm 500mW. As the batteries I am using the Rcr123A Charger Combo."

We already covered the host, heatsink, and driver. That part is fine so far.

As for the diode, you ordered the diode by itself from DTR right?

 

[VernoxVernax]

Well no one just had the chance to mention it. In fact, everyone kept suggesting you slow down a bit but you ordered everything anyway. I know it's super exciting to build your own laser for the first time but slow and steady wins the race.

What's done is done. The diode won't die instantly you will just have to be really careful with it.

I'll go ahead and summarize your parts list:

"trephanation showed me this awesome host bundle "bargain". I configured it with host opion C6. A 1.25A driver, Black heat sink and a standart driver pill. As the diode I am choosing the Mitsubishi 638nm 500mW. As the batteries I am using the Rcr123A Charger Combo."

We already covered the host, heatsink, and driver. That part is fine so far.

As for the diode, you ordered the diode by itself from DTR right?

Yes i did.

Mitisubishi ML501P73 500mW 638nm Diode In 12mm Copper Module W/Leads
Lens Options: No Lens
Back Half Options: Half Length Solid

 

[paul1598419]

Even the no lens option will come with an acrylic lens. Obviously don't use that with this laser. It will melt. If you aren't particularly dirty I wouldn't get too concerned about diode contamination. Just change the lens under as dust free as you can make it. I have changed lenses on mine several times and no failures.

 

[Snecho]

Yes i did.

Mitisubishi ML501P73 500mW 638nm Diode In 12mm Copper Module W/Leads
Lens Options: No Lens
Back Half Options: Half Length Solid

Ah ok, that's good that you got it with the module. And with the half length back half, you should be able to leave it attached since you got the slightly extended heatsink and you'll have enough room. That's great for extra heatsinking.

So really the only thing left is to buy a lens...
That's where it gets slightly tricky. There's 4 different ones to choose from.

What would be better for you, best looking possible beam and dot, or raw power?

 

[VernoxVernax]

Ah ok, that's good that you got it with the module. And with the half length back half, you should be able to leave it attached since you got the slightly extended heatsink and you'll have enough room. That's great for extra heatsinking.

So really the only thing left is to buy a lens...
That's where it gets slightly tricky. There's 4 different ones to choose from.

What would be better for you, best looking possible beam and dot, or raw power?

Best possible beam and dot or something in the middle. Sorry gonna sleep now, its 3am in austria.

 

[Snecho]

Best possible beam and dot or something in the middle. Sorry gonna sleep now, its 3am in austria.

There's a lot of technical details that could go into it but I'll try to keep it simple.

I would go with DTR's G8 lens as overall, it would tame the horrible divergence and give you a cleaner dot but keep about 90% of the power. Again, every diode is unique and there may be a better option as there could be little technical details that could dictate a better option but that's where my knowledge lacks a bit at the moment.

Good night, see you tomorrow

 

[gazer101]

Maybe look into either single-mode or FAC lensed diodes if you want beam quality. IMO there isn't much point in going for a clean beam: a speck of dust (which always makes it's way onto your laser) will ruin the quality anyways.

 

[Snecho]

Maybe look into either single-mode or FAC lensed diodes if you want beam quality. IMO there isn't much point in going for a clean beam: a speck of dust (which always makes it's way onto your laser) will ruin the quality anyways.

He already ordered the diode

It's ok, he just wants to build his first laser for experience.

 

[VernoxVernax]

There's a lot of technical details that could go into it but I'll try to keep it simple.

I would go with DTR's G8 lens as overall, it would tame the horrible divergence and give you a cleaner dot but keep about 90% of the power. Again, every diode is unique and there may be a better option as there could be little technical details that could dictate a better option but that's where my knowledge lacks a bit at the moment.

Good night, see you tomorrow

Ok thanks. I think I will buy that DTR G8 Lens now. If its not what I wanted in the first place I could buy a new one, the shipping is very cheap unlike survival lasers.

 

[paul1598419]

These diodes have horrible divergence specs. Using a long FL lens like the G8 may cause some clipping of the beam because by the time your are 8 mm from the emitter it has already spread too far and all of the light won't make it into the lens. If you are concerned about the divergence the 3 element lenses might be a better option. My G8s did clip the beam on my ML501P73 diodes.

 

[VernoxVernax]

These diodes have horrible divergence specs. Using a long FL lens like the G8 may cause some clipping of the beam because by the time your are 8 mm from the emitter it has already spread too far and all of the light won't make it into the lens. If you are concerned about the divergence the 3 element lenses might be a better option. My G8s did clip the beam on my ML501P73 diodes.

The
DTR-3E-R 600nm-800nm AR Coated Three Element Glass Lens
one?

If you confirm I can quickly send DTR a question if he can swap the lenses. Please respond!