Need driver help 808nm C-Mount

[mhemling33]

So I have decided to try and make a 2w 808nm build using this diode. It finally got delivered.

here are the specs

Wavelength:808nm +/-3

Power Output CW 2W

Emitter Size (µm) 143

Slope Efficiency (W/A) ≥1.1

Spectral Width FWHM (nm) ≤ 2

Spectral Width FW90%E (nm) ≤ 3

Working Current: 2.0 (A)

Working Voltage: 2.0V

Working Temperature: 15-35dgC

Storage Temperature:-40~60dgC

Size:TO3 Sealed.(see. tiltled picture for dimentions)

Recommended Heatsink Capacity (W) ≥ 4

Note before buying:

This is special sensitive optical compoents. Please be sure opertor has enough DIY and electronics espeirence.

The FAC collimation lens effect has 3 options---Square Beam End/Strip Beam End/Line Beam End.The Default is Square version any special request please message us before buying.



Attention

1.Laser beam is harm for eyes during process please avoid any directly see on the aperture.
2.Please use the suitable LD power driver, instant reverse current can not exceed than 25uA
reverse voltage cannot exceed than 2.2V,otherwise the LD will be damaged.
3.Please install the LD well before connecting to the power.The initial input voltage should be zero.
4.To increase/ decrease the current gradually for avoiding any current pulse which will damage the LD.
5.Please store or use the LD under dry and air flow ambient.To avoid any situation of condensation which will damage the LD.
6.Working under high temperature will increase the threshold current and decrease the efficiency conversion,speed up the aging of the LD.
7.The exceed power output will speed up the aging of the LD.
8.To use the LD with enough head dispensing or uner the cooling ambient.
9.Laser diode belongs to electrostatic sensitive components. Should deal with anti-electrostatic method.
To touch the LD directly unless humanbody is well connect with ground. Otherwise the LD will be burned easily.
To wear anti-eletrostatic wrist band is necessary.

Note:
1. Data at the temperature of 25 degree C, unless otherwise stated.

2. For fast axis collimation: Divergence < 4 o
3. Under normal operating condition, the lifetime of the diode is 10,000 hours

I was thinking about using a 2.0A x-drive mini I have with one 18650. I just need a double check that it will work without killing it :beer:

 

[Meatball]

So which FAC does yours have on it?

 

[mhemling33]

For focus I was designing it into the heatsink. Here is a model a drew up really quick to show you a rough idea of what i will do.

 

[norbyx]

Just a question for what do you want a 2W 808??? For me it's the most useless laser that I have...

 

[mhemling33]

Long distance mountable infrared laser for night vision. Lol

I just wanted to see what I could come up with

 

[ARG]

Looks good! I would recommend making the holes for the pins wider to prevent shorts. Fiddy has a TO-3 build, you should check that out.

Just a question for what do you want a 2W 808??? For me it's the most useless laser that I have...

All lasers are useless in the eyes of those who don't appreciate them

 

[norbyx]

Looks good! I would recommend making the holes for the pins wider to prevent shorts. Fiddy has a TO-3 build, you should check that out.



All lasers are useless in the eyes of those who don't appreciate them

Well I appreciate lasers very much but an invisible laser is more or less like an invisible gorgeous woman, you might appreciate beautiful woman but if you can't see it what's the point ?

 

[mhemling33]

Well I appreciate lasers very much but an invisible laser is more or less like an invisible gorgeous woman, you might appreciate beautiful woman but if you can't see it what's the point ?

I may be wrong but I would think that there are more applications that use lasers in the infrared spectrum compared to visible.

But I guess if your just using it for pointing it is no good

 

[norbyx]

I may be wrong but I would think that there are more applications that use lasers in the infrared spectrum compared to visible.

But I guess if your just using it for pointing it is no good

You are probably correct, but for what 99% of us hobbyist in this forum use the laser the IR has not much sense other than having one more wavelength.

 

[mhemling33]

It all depends on what you care about.... If all you care about is what the laser beam looks like then you are 100% right.

There are many usable applications that justify wanting an infrared laser other then just for a number to add to your signature.

Here is why I want to build and own an infrared laser.

1. The things that fascinate me the most is they stuff we cannot see. Our understanding of the universe and how it works is majorly based off of what we can see. When you think about a magnet it makes you wonder what we are missing. The capabilities of an IR or UV laser also fall into this category for me.

2. The challenge.... for those who build their lasers it takes the difficulty and risk to a whole other level. You need a decent amount of experience and knowledge to work with something you can't see but can be more powerful.

3. Ever own a 532nm? Ever want a 473nm, 589nm, 593nm? Some of the most desirable wavelengths depend on the use of IR lasers. If you ever want to attempt to build one of these, it is definitely a good idea to be able to build a nice IR laser first.

4. Using your IR laser in other applications besides pointing. Night vision is used by a large diversity of people for different reasons. Using IR lasers with firearms is my main interest. I have always said you can't put a price on being able to see in the dark when you need to the most. So the thought of long distance night vision applications really intrigues me. Night Vision scopes use an infrared source, mostly lasers and the max output of them is around 200mw and can cost thousands.

But if I only cared about beam shots then yes there is no point to IR lasers :beer:

 

[Fiddy]

Good hello,

I have built 2x TO-3 lasers, a 3W 808nm (driver problems limit me to 1.7W) and a 670nm 770mW that uses a thermo electric cooler.

Your initial heatsink design isn't bad, as ARGLaser said, you need more isolation between the pins and the heatsink.

Here's a few pics from my threads:

You need to allow for a lens thread on the top half of the heatsink centered over the diode window, and in my design i used the existing holes on the TO-3 package to run the bolts down through to sandwich the diode, its a good idea to buy a cheap TO-3 transistor to play with to help with the TO-3 dimensions and mounting.

Video of mine running under NV optics

 

[mhemling33]

Awesome stuff!!! glad to see i am not chasing my tail with this lol