Lighting wood on fire 3.2W 445nm

Ive been wanting to take some video of this laser, just havent had the time.

This video shows what 3.2W of 445nm can do when focused on a regular piece
of plywood.

I am working on a 6W array at the moment, and can only expect that bigger
flames may result.This is the same laser as seen in my avatar. I will add some
pics as well for this unit at a later time.

Enjoy :beer:


Newer video with similar footage + extras..



Original video (may not play due to copyright music blah blah)

Now thats power. Is that the laser thats on your Avatar.?

lazeerer said:

Now thats power. Is that the laser thats on your Avatar.?

Click to expand...

Thats the one. I have 3 and 4 diode heads, just need to finish them.

wannaburn said:

Thats the one. I have 3 and 4 diode heads, just need to finish them.

Click to expand...

Nice. I cant wait to see some more picture of it. It really looks Great.:gj:

That 6W array will be a beast. Also cant wait to see that.

Awesome song....I'm mean laser :yabbem:.

I'm planning a similar build - just waiting on the corrective optics from drlava.

Did you knife edge the beams together?

Dave

Giface said:

Awesome song....I'm mean laser :yabbem:.

I'm planning a similar build - just waiting on the corrective optics from drlava.

Did you knife edge the beams together?

Dave

Click to expand...

What is any laser video without a taste of Floyd


They are knife edged yes.. I already got the corrective optics from
Dr.Lava, just havent had time to play with them yet.


Heres some pics, just finished uploading.

I love the last two pictures.

Any pics of the inside of your lasers?

Thanks.

Real cool laser and pics.

Just to get this right: You used dichro-mirrors to put 4 laser-beams next to each other right?

Like this
OO
OO

Or 4 beams with dichros and a cube to get OO

How about using another lens and make a telescop to get a thin "coherent" beam again?

Nice build wannaburn....:gj:
Love the Floyd.....
Be careful not to burn down your house with that Laser... :eg:

Jerry

bbshamsa said:

I love the last two pictures.

Any pics of the inside of your lasers?

Thanks.

Click to expand...

Those pics were hard to take, I was holding a lens in front of the
cam to get a cleaner macro.

Not at this time I dont. I will work on getting some additional pics
up. I shot the video and took the pics about a month ago, all of
which are when the laser is running, so the inside is just a ball of
light. The only pics that turned out were taken on odd angles.

AnselmoFanZero said:

Real cool laser and pics.

Just to get this right: You used dichro-mirrors to put 4 laser-beams next to each other right?

Like this
OO
OO

Or 4 beams with dichros and a cube to get OO

How about using another lens and make a telescop to get a thin "coherent" beam again?

Click to expand...

If you look at the pic with the red filter in place, you can see the 2 lines
side by side. This laser is only 2 LD's, but have one with 3 LD's and just started
the 4 x LD array last night.

The beam on the 2 LD looks like > ll < for the 3 and 4 LD > lll < > llll <.
Because im just starting the 4 LD array, im trying to work in the cylindrical
lens set from Dr. Lava. Im not sure if I can fit 4 on the smaller lens though.

Next option will be a prism pair, just hate the losses im getting with them.
I can say the divergence is awesome with the prisms though.

lasersbee said:

Nice build wannaburn....:gj:
Love the Floyd.....
Be careful not to burn down your house with that Laser... :eg:

Jerry

Click to expand...

Thanks :beer:

Its not this one im worried about... let just call it 'jr.'

The one im starting is going to be double the output
with a low diverging beam. My other corrected labby is
under 600mW and puts holes in a black plastic trash can
20ft away

If I can utilize all 4 beams with lavas optics, it will be damn near
6W with the divergence of a 405.

With the 600mW I was aligning the optic from the back of my house,
approx 30ft away the bark on my maple tree was smoking :eg:

If I had the money to play around with, id dedicate an entire projector
to a single laser... will get there eventually im sure

Just dont use a prism pair for 808!!!! Dont flush your money down the toilet...
Its useless for blue.

I would rather put 4 diodes together and then use a telescope lens pair to form a thiner beam.

AnselmoFanZero said:

Just dont use a prism pair for 808!!!! Dont flush your money down the toilet...
Its useless for blue.

I would rather put 4 diodes together and then use a telescope lens pair to form a thiner beam.

Click to expand...

I wouldn't say 808 coated prisms would be useless, they just
take a huge chunk of power. You would still get a nice beam
but approx 1/3 less output. But >corrected<

I have 3 sets of Lava's cylindrical optics. I plan on using these wisely
as im not too sure when there will be a steady supply available..
IIRC the wait was around 2 months.

AnselmoFanZero said:

Just to get this right: You used dichro-mirrors to put 4 laser-beams next to each other right?

Click to expand...

Not dichro mirrors. Regular or front-surface mirrors.

I had a play with some of the Dr.Lava corrective optics and some prism pairs. I have to say that the prism pairs seemed to be quite a bit better. The cylindrical lenses expand the slow axis then correct back to a collimated output but the dimensions seemed huge! As the application was for a scanner, this was useless as the beam would not have fit on the galvo mirrors. With proper coated prism pairs I think you would have less losses than you think, (and a much easier setup). The enclosed instructions from Dr.Lava were followed to the letter and still the result was much more difficult to achieve than with a prism pair. Just my opinion you understand but if you'd like to buy my cylindricals I can have them shipped out tomorrow for the price I paid.

M

Wouldnt waste only ONE mW if using a 808nm prism-pair afterwards.
I meant loss of power...the beam will be nice, but weak.

Alu-mirrors should work fine for blue...

How much is a set? And what is included?

I tried some regular lenses on my 405nm project, but it was just an immense waste of power. 405nm isnt 445nm I know...just saying.

^ Here's the link to the sale thread.

M