Sony 6W IR Laser Diode

[hammy070]

I was browsing a site with IR diodes available.

I saw a 6W IR diode.

http://www.photonic-products.com/products/laserdiodes_invisible/sony/sld344yt.pdf

The input voltage is 3v, operating current is 7A.

Has anyone ever used a 9pin diode for a handheld format?

Is it even possible? I'm not sure how one would go about constructing it.

What batteries could be used to power the diode?

 

[Prototype]

The custom driver needed for it would be incredibly expensive, not to mention that diode probably costs several hundred to several thousand dollars. I believe there is also a TEC in that specific package and several sensors, due to there being nine pins. It would take a lot of work and money to make that thing portable, not to mention the optics you'd need to collimate it to a smaller line.


Edit: Just took a glance at the .pdf, and there is indeed a TEC inside there, so you'd have to deal with that also.

 

[.3lite]

The custom driver needed for it would be incredibly expensive, not to mention that diode probably costs several hundred to several thousand dollars. I believe there is also a TEC in that specific package and several sensors, due to there being nine pins. It would take a lot of work and money to make that thing portable, not to mention the optics you'd need to collimate it to a smaller line.


Edit: Just took a glance at the .pdf, and there is indeed a TEC inside there, so you'd have to deal with that also.

"incredible expensive"? That's not true, the simpliest driver to provide 7A would cost about 15$ or less(not sure about cost of components in the USA), the second driver for TEC using built in thermistor to stay at constant temperature also wouldn't be a problem, so in the conclusion - there won't be any problems with driving this diode, but you are right - most likely it will be hell expensive (diode).

 

[Prototype]

A good, high quality custom driver would cost a fair bit of money. Maybe I was a bit over zealous with the 'extremely expensive' bit. You're still looking at a lot of money for a portable laser that would probably see very little use.

 

[.3lite]

A good, high quality custom driver would cost a fair bit of money. Maybe I was a bit over zealous with the 'extremely expensive' bit. You're still looking at a lot of money for a portable laser that would probably see very little use.

ohh sorry, I didn't notice that he wants it for portable laser Nevermind then.

 

[StardustSprinkles]

With the right optics this could pump a massive DPSS unit.

 

[Flaminpyro]

As a portable unit these could power it easy.
http://laserpointerforums.com/f39/lithium-d-cell-3volt-primary-cells-fs-50295.html

 

[RA_pierce]

It would be easier to use a C-mount.
Highest power available (that I am aware of) is 7W.

 

[hammy070]

Is it possible to build a driver for any diode?

For an 8w c-mount instead of that Sony above http://www.innolume.com/_pdfs/laserchips/LD-1064-BA-8W.pdf

It is 1.5A and 10A. If one were to build a driver for this or order a custom one how do you go about it?

PS - Why is c-mount better than that Sony?

I'm not highly competent in the physics so if someone could explain clearly that would be awesome.

I tried looking for drivers and guides and but can't seem to find what I'm after.

 

[heruursciences]

These will set you back about $3500. They are TEC cooled lasers...

 

[hammy070]

I'm on a funky learning curve!

No matter how much research I do, as soon as I feel close to the moment it all begins to harmoniously fit, I get thumped by a whole new area of electronics, rendering me baffled and slightly shaken.

Anyway I am convinced I have neglected a critical and essential factor in this project, as is expected of a n00b. I welcome the rolling of eyes as I have done the same in areas where I am more competent.

But regarding that Sony 6W diode.

I imagine something to regulate voltage and current is what is needed to protect the diode. Does a driver need to do anything else? I need to know this so I don't waste time.:undecided:

If that being the case, would this not suffice?

Integrated Circuits from Rapid

And would this battery not suffice?

3.6V D Size R20 Lithium Battery (ER34615 / LS33600) | Lithium Batteries | Our shop | Microbatt UK Ltd | BT Tradespace

If not explain why, so I can better focus my reading.

Thank You!

 

[hammy070]

But I also really would like to build a driver/constant current source/voltage regulator.

The thought of crafting a circuit for a laser is so much more appealing than buying a readymade part. Uniquely made, one of a kind.

 

[hammy070]

BUMP!

Any views on the above battery and controller?

Is there anyone who has lots of experience that could pm their msn address, I think a 10-15 minute chat in real time could answer more than the forum at this rate!

Oh I've decided to opt for a c-mount 7W.

It must be portable, but not necessarily cylindrical. I just want to get the circuitry and assembly right, I'll do the rest. The laser will be operated for no more than 10s intervals.

A basic heatsink should be adequate IMO.

I've tried looking around for detailed descriptions of c-mount laser diodes.

I read a post which did just that, but an added diagram would have been great.

The c-mount has a tail and a hole in the square. I assume the laser is on the opposite side of the tail end? Also does the entire part need to be housed/protected or just one side.

How would you fit a lense on? Let alone a beam expander. Depends on host I suppose.

During my build I'm going to test it first on cheaper diodes, of various powers. Measure all current and voltage spikes. Will even deliberately try to break one so I know my equations are sound.

I'm tempted to get a module or handheld 2-3 watt.

But where's the fun in that.

 

[Prototype]

Make sure you've got proper goggles for the IR range of this diode. On a C-Mount diode, the top of the square is where the die is. It's in the middle and very, very fragile. You don't fit a lens to the diode, you position one in front of it. You would need to heatsink the entire back side of the diode. Might I ask what C-Mount you're going to use? (I.E. a link to it :thanks

Edit: For a driver for several amps of current, I suggest the FlexMod from drlava, I'm not sure of the maximum current it can provide, but it can do enough to give you several watts of output power.