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Old 01-27-2014, 03:41 PM #1
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Default My first "real" laser.

I have Bought a 445nm 9mm 3W laser diode, housing, G2 lens and X-driver from DTR's lasershop. The only laserexperience I have was building a red DIY laser bought on Ebay from korea.
I decided to use a cheap pocket lamp as housing and turn/mill the cooling head myself. The first thing I did was to reverse engineer the pocket lamp so I could be sure everything fitted together. The juice is delivered by two 950mAh LiIo batteries. Today I played with it a lot and I think that the batteries was finished after less than 15 minutes. But thats OK. I have tested the diode before installing it in the housing and I think that the little coil and the chip gets pretty hot so i installed small aluminium plates to act as heat sinks. Unfurtunally I bored the hole for the laserunit a little to big so I have glued the laserunit to the cooling head with thermal epoxy. Now I will hope that nothing breaks because now the lasermodule cant be removed without destroying it.

The drawing was done in Autodesk Inventor.
A few hours ago the laser thingy was finished and it workes fantastic. Now I see why they say lasers are dangerous. It penetrates and burn almost everything.

I tried to take a beamshot and I think it worked out OK. The dot is not round. At first I thought it was defect but the owner of DTR's lasershop wrote to me that it was normal and I have later read a few threads about powerfull laserdiodes and they all have rectangular dots.

It has been very rewarding to make such a powerfull laser and the result is beautifull. I already love lasers a little bit


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Old 01-27-2014, 04:23 PM #2
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Default Re: My first "real" laser.

Very nice! Looks like you did a great job on the mill work.
Now you need to make an equally impressive focus knob
I would love to have a lathe.
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Old 01-27-2014, 04:26 PM #3
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Default Re: My first "real" laser.

I recognize that little flashlight. It's quite small. Nice pocket size 9mm. I
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Old 01-27-2014, 06:06 PM #4
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Default Re: My first "real" laser.

Of course I did the "Baloon experiment".

Laser Ballon Eksperiment - YouTube
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Old 01-27-2014, 11:53 PM #5
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Default Re: My first "real" laser.

Very nice first build!
And as ENX said, very nice mill work!
Now you will have to send it to a member to have it LPM'd
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