Project "red"

**Phritzler** · 10-02-2007, 17:17

Hello!
First, sorry for my bad english...
I don´t write many things here, I´m only the "small listener". I´m more active on another forums.
But I think I will present my new, homebuild red 3.5-4Watts laser.
There are coubled 24 Diodelasers where one Diode will be powered with ca. 180-200mW after the Optics.
All Diodes have their own Drivers, so a 24 Driver supply
On the picture you only see 23 Diodes, I damaged one and haven´t change it before the pic was shot.
I must change the mirrors and Justate the polarisation of the Laserdiodes new. At the moment the outputpower ist only ca. 2 Watts, but after changing mirrors and take some Adjustments I think I come up to 3.5 to 4Watts of nice red

Beamdata after The Collimination Telescope is ca. 4*4mm at <1.5mrad (I think more 1.2mrad).
Yes, the yustate takes manymany hours and you see that the mirrors wasen´t cleande (You see high power red diffused light).

Best Regards,
Phil

**cruch** · 10-02-2007, 17:21

OMG!!! That is pure beautyfull!!!
REALLY NICE!!!
I want one

**mliptack** · 10-02-2007, 17:46

WOW... that is amazing! Mind to share some insight, I have been planning on doing that.
Where did you get the diodes? How many mW each? Did you follow any instructions?

I would really appreciate your help, I have been wanting to work on something like this for about a year now, and havent had the time/funds, but I have been trying to do the research and come up with nothing...

Also if you have any more pictures to share it would me MUCH appreciated... as much as I enjoy building, I also like to see how other people build... it's quite intriguing.

**Phritzler** · 10-02-2007, 17:56

Hello!
The Diodes are Hitachi Types who runs on 180-200mW, the optic damage 20% of power, so the direkt Diode output is ca. 216-240mW.
The complete diode "blocks" with holders will be stabilize by Tec Elements on ca. 22Degrees, but I haven´t mount the peltier elements now (will come in future...

)
You should look for very good mirrors, my mirrors lost ca. 12% power per mirror!
And don´t use normal Mirrorholders for it, they wouldn´t be stabile enought!
fG
Phillip

**carmangary** · 10-02-2007, 18:18

That's pretty cool and all but will it pop a balloon?

**Phritzler** · 10-02-2007, 18:22

Hello!
Haven´t test it with balloons, but white paper will burn, also carton...
-Phil

**mliptack** · 10-02-2007, 18:23

Wow I am still in awe!

lol I bet that one focal point wouldn't have that much trouble popping balloons.... hahahaha

Also I assume all the diodes on one side are horizontally polarized and the other side vertically polarized... so that they match up one to one on that final mirror...?

(Sorry I keep editing this...)

Could you let me know what type of lenses you used for combining your final beam... like I said I am not very good with optics any help in that area would be really helpful!

**buffo** · 10-02-2007, 19:45

Phil, I am impressed! You have put a *lot* of work into that! I'm amazed that you are getting such good beam quality after mixing the beams from so many diodes. (24!!!!)

You should get a job working for the people at Arctos lasers! (They build laser systems that look a lot like what you have built.)

I wonder.. How long did it take you to align all the beams?

Adam

**Phritzler** · 10-02-2007, 19:52

Hello!
Thanks

I take ca. 1 Week for build the complete laser, justating ca. 2 Days (ground justate only some hours, but I must stabilize the system so adjust 5 times new... I don´t know how to say it in english

)
Yes I was also amazed about the good beamdata!
But I use 3 Lens optics to colliminate the beam of each diode, the beam output is 5mm, but "NO"(very small) divergence. With that I can become good beamdata! I have take a lot of experiments that I can get it stable :-)
I think I´m to young for work for arctos

Greetings
Phi

DZ · 10-02-2007, 20:00

Damn, that is very nice. I think I may have a new project to work on!

**p1t8ull** · 10-03-2007, 01:55

That is truely awsome Phillip, you have certainly raised the bar for home-brew red's!

Can't stop smiling as I look at those pictures! Brilliant... literally!!

C'mon... who's going to break the 5watt barrier?

**allthatwhichis** · 10-03-2007, 02:24

Damn man, that is a thing of beauty! I really like that collmination chamber... Looks like a HeNe tube! So what was the final cost?

**stanwax** · 10-03-2007, 03:23

Man that is a very impressive piece of work. You deserve a round of applause for that - no a standing ovation

Well done and thanks for sharing. Keep us up to date as you deveolp it further.

Now when do you start to build a 24 source blue laser.....?

Rob

**Phritzler** · 10-03-2007, 03:26

Hey, woow Thanks

I will test new Diodes to get out 250mW per Diode after optics so I will come to the 5Watts

But first It can work on smaller power, I will wait

What has it cost on only material price? I don´t know, but someone can make a "small" RGB Projektor for this money....

Thanks for you replies

Best Regards
Phil

**cruch** · 10-03-2007, 03:29

Phritzler:
Where are you from?
What was the total cost of your system??

**Phritzler** · 10-03-2007, 03:33

Hello!
I´m from Austria.
And we wouldn´t talk about the price

-Phil

**cruch** · 10-03-2007, 03:35

hehehe!!
Guess pretty high!

**dave** · 10-03-2007, 03:40

Originally Posted by p1t8ull

C'mon... who's going to break the 5watt barrier?

Probably not me anytime soon, however, I think all this inspiration is going to get me started

**andy_con** · 10-03-2007, 07:23

wow lost for words....

we need more pics

**allthatwhichis** · 10-03-2007, 07:33

Originally Posted by andy_con

wow lost for words....

we need more pics

Yea, more pics!!! I want to see that beast light a box of matches...

How big is the beam? Divergence? I assume it has to be a relativly big beam. Do you have scanners that beam will fit on? That is going to be expensive to color balance...

**JimBo** · 10-03-2007, 08:01

Originally Posted by allthatwhichis

Yea, more pics!!! I want to see that beast light a box of matches...

How big is the beam? Divergence? I assume it has to be a relativly big beam. Do you have scanners that beam will fit on? That is going to be expensive to color balance...

Light a box of matches!!!!!!
More like light a bonfire .

Jim

**Phritzler** · 10-03-2007, 08:23

Hallo!
Beam : 4*4mm and <1.5mrad (more 1.2mrad)
I will make Pics as soon if you want!
-Phil

**the_kcar** · 10-03-2007, 15:27

Impressive, Phil - that must have been a migraine to fine-adjust!

Quite impressive

**marconi** · 10-03-2007, 15:31

I agree...Very nice job Phil

That beam is " TIGHT " man.

I'd like to know what lenses you used for the telescope if you dont mind.
Getting the right combination is a real trick.

**Phritzler** · 10-03-2007, 17:01

Hello!
There are 2 achromatic lenses, one with f=120mm the other with f=30mm
fG
Phil

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