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FrozenGate by Avery

"Open Can" 390mW 10X Violet "Pen"

Joined
Sep 16, 2007
Messages
3,660
Points
113
...As the title states...

If you want to skip the commentary, the link to pictures is near the bottom!

I've finally completed the >300mW violet pen I have been planning for the past couple months. I finally received the diode and here it is.

During the harvesting process, I must have put pressure on the "can" because once the diode was loose, I noticed a crack in the window. I had to carefully remove it... I was happy to discover that it survived surgery with no damage whatsoever.

This little laser is less than the length of a leadlight and roughly the same diameter.
It is powered by AAA size batteries (NiMH 1.4V per cell), driven by a V5 Flex, and houses the diode from an LG 10X Blu-Ray disc writer.
The lens used is the 405-G-1 from Jayrob.

It features a click-on/click-off forward clicky switch in the battery cap and a 405nm anti-reflection coated window in the aperture. It is o-ring sealed for resistance to humidity (not fully water resistant) and is focusable. It is run happily at an 80% duty cycle with 100 sec on.
It is set at 390mW when warm and will peak at 405mW when cold ;)

I believe that this diode lases at a shorter wavelength than my 12X. Although the power difference is less than 100mW, the 12X appears about 30% brighter and the 10X is a slightly "deeper" violet.

The construction was a little tedious, since there was very little space in the host. It is very solid with all-brass heat-sink. The module is press fit for good thermal conduction to the host.

This, to me, is the ideal pen laser. I think it is a great combination of portability, functionality, and power. And it looks great with my custom warning sticker.

I may make some design changes (this is a "prototype") and some minor improvements (including a copper heat-sink), since my original intent was to make a kit for this, but I haven't found a reasonably priced source for hosts like these. I have been searching for months.

Anyway... here are the pictures on my flickr:
10X Laser - a set on Flickr

Feel free to check out the other sets of my other lasers.
Thanks for looking.
 
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Nice! That's a fairly long duty cycle for that little thing. I'd definetly like to have 300+mw in a pen.
 
Nice Pen build. Sorry to hear about your window. It's happened to me once before too.
 
Where exactly did you extract this laser diode from?
 


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