Say Hello to my little friend! - RFEDA Forum

Scarface anyone?rdrw
rdrw
Ok, so I have been hinting at the new laser that I am building, but I never really started to talk about it because I wanted to have a design and everything to share before I proceeded. rdrw
rdrw
Well I still don't really have a design, but I have been up all night working on building my new anticipated to be "700mW 650nm laser.rdrw
rdrw
My biggest dillemma to building my own laser is all the machining needed to get all the aluminum the way you want it etc. I do have access to basic tools, but this was a quick prototype... so I needed something that could be used in this situation.rdrw
rdrw
Thats when it came to me... my dead lasever module... so I removed the ML style module out of the larger style casing that I have. Now I have a nice aluminum case to mess with. For a while I toyed around with it trying to figure out how to build it since the baseplate would make it hard for me to align the beams through the aperature, without having to remove the cover every step I make. Plus it would be difficult to mount the diodes. So then I stepped away from the project for a moment SUCCESS - Just flip the damn thing over! Duhrdrw
rdrw
So now the baseplate is the cover.rdrw
rdrw
So right now I still don't have the diodes I need... well not all of them. So I put 5mW lasers in their place so you can all get the idea.rdrw
rdrw
The last pictures are taken with one of the 200mW 650nm diodes cranked up and used flash powder as smoke (my fog in a can is gone... I need a hazer!)

Reply No.	Replier	Total Replies 12 [View All Replies] [New Reply]	Replied at

1	fusarium	In the second image (and some of the last one) you can see a bit of the layout pencil work I did on the new bottom of the laser. Soon I will start working on some cheap mounts. The holes I drilled were a huge pain with those heatsinks and the cheap drill press I have. :-/ Oh well it'll all work out EDIT: I forgot to mention, while shooting these pictures (Right after the flash powder was set off) I smelled burning paper or wood or something. So I thought maybe the flash powder was smoldering on something. But I couldn't find anything. Next I notice the corkboard that the laser is terminating on is smoking at about 2 meters. The last picture is a picture of the burnt corkboard.	2008/8/30 00:52

2	wy830115	Wow! Very nice! I like the design a lot. I bet yadda would be happy to CNC a correct block for you if you asked nicely! Give him a bit of time and he'll get back to you! What diodes are those? Looks very nice!	2008/8/30 00:52

3	stgod	How good are the beam specs on the 200mW versions?	2008/8/30 00:52

4	stgod	Potting the Aixiz diode housing into the ally with thermal epoxy would work ok - and hold everything rigid enough	2008/8/30 00:52

5	knoxville	good work, Max you had many many amazing idea, Best regards! Bridge	2008/8/30 00:52

6	hgping	I made a couple of housings for those things. I had to use a boring bar to get a correctly sized hole. Also, i used a lathe to make the piece diode holder perfectly round from end to end. It isn't quite smooth where the two pieces screw together so it won't fit in a tight hole as it is bought. As far as insulation goes, I got a piece of sheet mica that is sandwiched between the main diode heat sink portion and a plate that I use for mounting. It doesn't protect against stray screw drivers and such, though.	2008/8/30 00:52

7	z4120356	Yeah the Aixiz diodes would be a lot better suited if they were uniform in size... they do have those smaller modules too, I bought a couple of them, maybe I will start doing some measurements As far as insulating the main block from the mounting plate, I was thinking of doing that as well, but like you said, it still has cause for concern. Something that I get too worried about. After all in that case you would blow all the diodes. In my case, maybe one or two of them. -Max	2008/8/30 00:52

8	bubulu	How are you aligning the 4 diodes into a single beam with (2) V-pol and (2) H-pol?	2008/8/30 00:52

9	pdang	Yep! You can see "V-pol" written on the base of the laser. The side that is closest to the camera is the H-pol side as you can see in the beam that is terminating on the V-pol side.	2008/8/30 00:52

10	ai8957382	Also, I've been looking around for mills or those DIY CNC mills, I found a relatively nice mill from Harbor Freight for about $340 shipped. I may just have to go that route. I'll also need to find a better supplier of metal http://www.harborfreight.com/cpi/cta...emnumber=47158 These are also some pretty nice ones, just too expensive at the moment "$700 http://www.sherlinedirect.com/index....&category_ID=2	2008/8/30 00:52
Total Replies 12 Thread Per Page 10 Page 1/2 \|< << 1 2 >> >\|