Will this work?

[536616]

Hello fellow LPF members,

I always wanted to build a 808nm laser and so I'm here to receive any feedback/help if my decision to buy the following parts would work:

Laser diode:

A 808nm 1W 9.0mm LD
808D 1000 TO5 9 0mm 1W 1000mW 808nm Infrared IR Laser Diode to 5 LD | eBay

They sent me a data spreadsheet for the specification of the LD attached:
http://imgur.com/up3AZEa

So I decided to get the rest of the parts from Survival Laser.

Host assembly parts:

-A S4 host
-1.25A driver
-Extended & tapered copper heat sink
-*Céramique*2*Thermal*Compound
-9.0mm copper module for LD
-Not forgetting a 9.0mm diode press-in from SL to press-in the LD into the copper module.

Lens:
3-element lens with focusing ring

My main question was:
If the host accepts 2x Rcr123A (4.2v fully charged * 2 = 8.4v) and the operating voltage stated in the data sheet for the LD is 2.0-2.3v, would the LD gets burned? Or will the driver regulate the voltage for me?

Thanks for reading.

 

[Encap]

Contact Survival Lasers and see if they have a appropriate driver for your application.

 

[10fenny]

That's a buck style driver (bucks off volts a tad) and if i remember the forward volts of ir diodes is fairly low.. like 2.3v. So a single cell would work... is this your first build? A laser can't perceive with your eyes is a very dangerous first build

Edit. I'm a skimmer.. a single 18650 should work.. but I built a 780? Nm awhile back and had to make the host case pos for it to work right

 

[536616]

Contact Survival Lasers and see if they have a appropriate driver for your application.

Hi encap! Thanks! I have asked them before this and they recommended the following SL parts to me including the 1.25A driver I started this thread because I was worried if I missed out something as this is first high powered laser build

That's a buck style driver (bucks off volts a tad) and if i remember the forward volts of ir diodes is fairly low.. like 2.3v. So a single cell would work... is this your first build? A laser can't perceive with your eyes is a very dangerous first build

Edit. I'm a skimmer.. a single 18650 should work.. but I built a 780? Nm awhile back and had to make the host case pos for it to work right

Hi 10fenny, thanks for replying! By the way, how do you know if it is a buck driver or a boost driver? Yes this is one of my first real build and I know it's pretty silly to start off with IR but when it comes to safety, I'm won't be playing around.

Edit: Ah I read about the buck drivers in one of the Driver sections and I see that it would be ideal for my situation where my LD voltage drop is lower than my input supply! Thanks!

 

[diachi]

Did you remember to include laser safety glasses? You'll NEED lasersafety glasses for 808nm.

Terrible idea to start out with 808nm (And at 1W too!) - it's just about completely invisible but will damage your eyes in just the same way as high power visible laser would (except you know, you can't even see it coming).

 

[536616]

Did you remember to include laser safety glasses? You'll NEED lasersafety glasses for 808nm.

Terrible idea to start out with 808nm (And at 1W too!) - it's just about completely invisible but will damage your eyes in just the same way as high power visible laser would (except you know, you can't even see it coming).

Yes! I got this: Eagle Pair® 190-540nm & 800-1700nm OD5 Laser Safety Goggles
Thanks for reminding

 

[Pman]

I built a 4W 808nm laser only because I got the 3W diode really cheap and wanted to try building a c-mount :
http://laserpointerforums.com/f40/4w-c-mount-808nm-ir-laser-97942.html

 

[536616]

I built a 4W 808nm laser only because I got the 3W diode really cheap and wanted to try building a c-mount :
http://laserpointerforums.com/f40/4w-c-mount-808nm-ir-laser-97942.html

Oh my, that's pretty informative! Thanks pman!