New build

[Kookapeli]

This is my first build in a few years, it's a BDR-209 from DTR, Heatsink from lifetime17

 

[Lifetime17]

Hi K,
That will keep the BDR-209/405nm nice and comfy , We all know how finicky these diodes are . Cu is the way to go for heat sinking.

Rich

 

[BowtieGuy]

Nice build, hope it's the first of many!
Good job on the heatsink, Rich.

 

[Kookapeli]

It's actually my 8th ish will have to post a pic of all of them soon

 

[Lifetime17]

Hi BTG,
Thanks the sink is great for these diodes, K did a great job building it.

Rich

 

[paul1598419]

Just curious, where did you have the current set on your driver for this build? Did you measure the optical power? Congrats on this build.

 

[Kookapeli]

The driver was preset by DTR so unsure what it is ?

 

[Lifetime17]

Hi K,
If Jordan set the driver to maximum / 600mA then they should bring you to about 1W+/- .And if he set it to say 550mA that would be about 900mW +/-

Rich

 

[Kookapeli]

It doesn't seem that poeerfull when I burn stuff ?

 

[Lifetime17]

Hi, Did you order the G2 lens , and focus to a fine dot

Rich

 

[Kookapeli]

Just the 3 element lense

 

[Lifetime17]

Hi ,
Well that solves that issue the G2 is the one you would want for the 405 diode its the best to give you the power .

Rich

 

[paul1598419]

Since this is a single mode diode, you should get a short focal length aspheric lens for it. Ones like the G2 can be had on eBay for $8.00 or less and you should get an increase in power of ~20%. Since they are short focal length lenses, the beam diameter remains small when compared to a longer focal length lens like Sanwu's G7. Search for 405nm lenses and look for single element ones on eBay. These lenses are always housed in a brass barrel which is discernible from the black housings of multi-element lenses.

 

[Kookapeli]

The one in it has a metal housing, it was the 3 eg one

 

[Lifetime17]

Hi,
Feebay has them and they will say G2 aspherical lens , it should say 10mm barrel length single lens . Thats what you want.. Try techhood or existotem on line . Or hunt for them they aren't a rare lens. If I knew that you were going to buy the 3E I would have sold you a G2 I have in stock and shipped it with the copper sink.

Rich

 

[paul1598419]

The one in it has a metal housing, it was the 3 eg one

Yes, and it is black in color. The short focal length aspheric lenses all come in a brass housing. Many are already AR coated for 405nm. But, it never hurts to check what kind of AR coating a lens has that you are ordering from a seller on eBay.