powering my 638 nm 700mw laser

Rive · May 4, 2016

hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks :yh:

Dutch67 · May 4, 2016

Rive said:
hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks :yh:

Don´t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.

ElectricPlasma · May 4, 2016

Rive said:
hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks :yh:

This is a bit hard to understand. What exactly are you asking? A 3.7v 18650 or any other lithium-ion battery will work. The discharge rate (<1.2A as you stated) is well within standard discharge rate for 18650s.

Lildutchboy7 said:
Don´t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.

You're definitely on the right track; a driver will take the current it needs. However, the battery you're using does matter, in some situations. For example, in one of the new high power diodes, the large amount of current needed will require a battery with a large discharge rate, otherwise it will damage the battery. Or, multiple batteries could be used if high discharge rate batteries cannot be found or acquired.

OP, you don't need to worry about discharge rates, as your module seems to be within the standard.

diachi · May 4, 2016

Lildutchboy7 said:
Don´t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.

Yes - the driver will take whatever it needs to power the diode, assuming the battery is capable of supplying it - if not, well, you'll have issues. :shhh:

Yes - amp hours is a measure of the capacity of a battery. So say you have a 1000mAh battery (1Ah), then that battery has the capacity to supply 1A of current for 1 hour.

To the OP - some more information about your build would help. What host are you using if any? We can't recommend a battery if we don't know what'll fit. :na: Generally I'd go for whatever fits, provides the correct voltage and can supply enough current - so probably one of the 3.7V Lithiums at whatever size fits. Assuming 3.7V is enough.

Not sure what current to use for that diode as I have no experience with it - the information should be out there - search for it.

Perhaps read up on electronics theory a little more before proceeding too - it's good to understand how these things work. It'll make building it all easier and troubleshooting it won't be as hard if something goes wrong.

Rive · May 4, 2016

Thanks guys this info has helped a lot and yes I am using a 18650 battery with a mechanical mod as the battery holder. And the the module is one of dtr's custom heatsink modules that can screw into any mech mod. Cheers guys :beer:

This is the item if you wanna know what I'm talking about.

https://sites.google.com/site/dtrlpf/home/diodes/oclaro-700mw-638nm-diodes

Dutch67 · May 4, 2016

Rive said:
Thanks guys this info has helped a lot and yes I am using a 18650 battery with a mechanical mod as the battery holder. And the the module is one of dtr's custom heatsink modules that can screw into any mech mod. Cheers guys :beer:

This is the item if you wanna know what I'm talking about.

https://sites.google.com/site/dtrlpf/home/diodes/oclaro-700mw-638nm-diodes

I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday

. Maybe then we can compare builds, beams and such!

ElectricPlasma · May 5, 2016

Lildutchboy7 said:
I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday . Maybe then we can compare builds, beams and such!

Gratz on the purchase! I actually have yet to own a class IV red, maybe this will be my start in the not too distant future

What host are you putting it into?

Dutch67 · May 5, 2016

I was thinking of buying a s4x host but I was wondering if my now empty c6 host would work just as well. I don't think the oclaro gets very hot so I wouldn't think it would need a very large host.

Rive · May 5, 2016

Lildutchboy7 said:
I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday . Maybe then we can compare builds, beams and such!

Awesome yeh noice :beer: i would like to do that i should have mine soonsih but yeh its my first class 4 red laser and i cant wait and i thought about getting a c6 bundle there on special right now but i decided to put in a little more money and get a more quality build. this is the mechanical mod i got to complete my build. tho i do not have a lpm if you do could you test it

.

Mechanical Mech MOD Clone Stainless Steel 18650 Telescopic Nzonic V4 | eBay

Rive · May 5, 2016

and im probs not getting a g-2 lens for a while i really like using a three element lens i prefer a nicer beam then power. but i heard on reds the dispersion (i think thats what you call it) is really bad

Dutch67 · May 5, 2016

Rive said:
and im probs not getting a g-2 lens for a while i really like using a three element lens i prefer a nicer beam then power. but i heard on reds the dispersion (i think thats what you call it) is really bad

Divergeance

And yeah, I like the 3 element for my beams, and the G2 for burning and such. I was thinking of looking into getting a G7 lens somewhere but I still need to learn more about it first. I will probably use the 3 element for this red as well. I have a G2 lens from DTR and I think I'm going to keep that on my new NUBM47 laser that should be finished in a week or so.

ElectricPlasma · May 5, 2016

G7 = basically a child of the 3E and G2, better divergence than the G2 and more power than the 3E.

Dutch67 · May 5, 2016

ElectricPlasma said:
G7 = basically a child of the 3E and G2, better divergence than the G2 and more power than the 3E.

Okay cool! I think I'll buy one from sanwulasers, cause that's the only place I can really find one that screws in like the g2

Dutch67 · May 14, 2016

Well I finally created my Oclaro! It is in a Poorman's/Scrapyard host because I needed more room for a driver and I didn't feel like buying a new host. So I made one for myself! Here it is:

http://imgur.com/QfOA1MI

I don't really have many tools for threading and things like that so a lot of it is soldered and/or pressed together. It is very sturdy though so I'm happy with it!:crackup:

ElectricPlasma · May 14, 2016

Lildutchboy7 said:
Well I finally created my Oclaro! It is in a Poorman's/Scrapyard host because I needed more room for a driver and I didn't feel like buying a new host. So I made one for myself! Here it is:

Imgur: The most awesome images on the Internet

I don't really have many tools for threading and things like that so a lot of it is soldered and/or pressed together. It is very sturdy though so I'm happy with it!:crackup:

Nice job for not having any tools, it's very hard to work with metal unless you have the right tools for it obviously. Got any shots of it working or maybe beam shots?

badboybilly · May 14, 2016

Guys you should try the Mitts 500 in my opinion you can push them harder at 1.4a you can manage 1.1-1.2w and you don't need an expensive driver just use an AMC 1735,
I have 2 going strong over a year now!

powering my 638 nm 700mw laser

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