Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

My third IR laser build, 1W, 808nm, 1x18650

ReNNo

0
Joined
Mar 27, 2009
Messages
589
Points
0
I've just finished with my third IR laser build...that is the last diode I had.

It's almost the same as my last build. (UF host, AMC7135 1.4A driver,2x plastic aixiz lenses, 1x18350)
Only difference is that I use 808nm diode and "better" heatsink :)
Status LED is still there :)
Here is my last build... http://laserpointerforums.com/f40/my-another-ir-portable-build-1w-1x18650-51065.html

And here are some pictures from new build..









I tried to solder some SMD capacitors on the diode pins to protect diode from voltage spikes.


But when I tried to power up laser it didn't light up. To make laser working I had to turn on and turn of laser about 10 times very fast and then laser worked. AMC7135 probably has protection of short circuit or something like that and capacitors can have very low resistance when they are not charged. Because of that AMC thinks that out circuit is in short circuit. Because of that I had to desolder all capacitors. But I think that voltage spike won't be problem with only one 18650 battery.

I think I'm done with IR builds for now...
 
Last edited:





Joined
Feb 5, 2008
Messages
6,252
Points
83
Re: My third IR laser build, 1Wm, 808nm, 1x18650

Now that's awsome - everything that needs to be said is said over MSN :D

You are makin' IRs like there is no tomorrow!

Good job!
 
Joined
May 4, 2009
Messages
2,216
Points
83
Re: My third IR laser build, 1Wm, 808nm, 1x18650

Another great build! Pumping those crystal sure is neat, i bet they start to get warm pretty quick under that laser
 
Joined
Feb 5, 2008
Messages
6,252
Points
83
Re: My third IR laser build, 1Wm, 808nm, 1x18650

Awesome work, love those DIY DPSS green shots!
Hey ReNNo shoot him over the image of IR/GREEN beamshot, with the big IR laser, remember that?
IR beam visible :D

Also, would be about time to shift your frequency range a bit up the latter, somewhere around 445nm is fine for me! :D :p
 

ReNNo

0
Joined
Mar 27, 2009
Messages
589
Points
0


This one? :D

@Gryphon
Yes, this small crystal warms up very quickly.
 
Joined
Jul 30, 2009
Messages
487
Points
0
^^^ Sweet!!!

EDIT: Won't let me do all-caps :(
 
Last edited:
Joined
Feb 21, 2008
Messages
1,056
Points
0
A very nice looking build! Well done. The 7135 does not tolerate an output capacitor, and as you found, won't start if a cap is present.
 

Fivos

0
Joined
Sep 6, 2010
Messages
54
Points
0
without this crystall the 808nm diode is 1000mw. with the crystall how mw it will lose???
 

ReNNo

0
Joined
Mar 27, 2009
Messages
589
Points
0
As I told you in youtube comments.
I get about 40-50mW of green light or maybe less.
Cheap crystal is main problem.
 
Joined
Aug 13, 2010
Messages
839
Points
28
Hmmm, that explains the case of the non-lasing laser.
I have a 16v X 47uf cap (large spikes) paralleled with a 104 value ceramic cap for the small spikes.
I don't have my videocamera here so I couldn't tell if it was focused.
Apparently I was just sitting in the shop, with my goggles on, fiddling with the focus knob, watching a random spot on the wall like a goof.
.....My girlfriend wonders about me sometimes.
 
Joined
May 25, 2010
Messages
3,655
Points
0
Nice.:) we dont see that many IR Builds. That IR Beam Picture is sick.!!!!:gj:
 
Joined
Feb 5, 2008
Messages
6,252
Points
83
Nice.:) we dont see that many IR Builds. That IR Beam Picture is sick.!!!!:gj:
Thread is quite old, ReNNo made some more of great IR builds before. Check out under his profile, threads that the user made. Personally, the 2x 18650 LM317 regulated IR was totally bada$$.
 




Top