6 x LPC-826 build

[andy_con]

3600mw vs 600mw

[LaNeK779]

how on earth do we get 3,6 watts out of 12 diodes?

i was estimating something around 2,4 - 2,6 (around 250mw per diode minus losses at lenses, pbs, waveplate and telescopics)

[andy_con]

depends on the diodes you use and the quality of optics

also no waveplate or cube needed

[laser_freak]

depends on the diodes you use and the quality of optics

also no waveplate or cube needed

Please correct me if I am wrong, but I have always thought that if you use a PBS cube, you will get a "better" beam. By "better" I mean potentially lower divergence and smaller diameter. My reasoning is with a PBS you can overlap the beams. Without using a PBS you usually need to use a telescope, and although it may decrease the diameter, it will increase the divergence.

[DjMagnus]

depends on the diodes you use and the quality of optics

also no waveplate or cube needed

I guess you are talking about the lpc-826 diode?
How do you combine these twelve without a cube and waveplate before telescopics?
And thank you for all your build threads great info! missed out on above information though...

[andy_con]

I guess you are talking about the lpc-826 diode?
How do you combine these twelve without a cube and waveplate before telescopics?
And thank you for all your build threads great info! missed out on above information though...

http://www.laser-man.co.uk/projects/...ode-array.html

[DjMagnus]

http://www.laser-man.co.uk/projects/...ode-array.html

Thank you Andy, I totally missed you website! Good work! A lot of nice reading and looking at pictures!

[dnar]

Just to update my red situation, I have rebuilt to a quad knife-edge, 2 over 2 with the following parts:

• 4 x Brass LD mounts (Dave)
• 4 x 405-G-2 Lens (Dave)
• 4 x Brass lens retainers (Dave)
• 4 x Micro flexure bounts (Dave)
• 4 x Dielectric 660nm mirrors (Dave)
• 4 x LPC-826 @ 500mA
• 4 x Lazorbs on vero board with machined IC socket pins (inspired by the Evil one)
• 1 x Flexmod P3 + 4 1 ohms resistors.

Beam profile is nice! Much better than with Axiz lens. Power output is 1270mW. Thats 317mW per diode.

[allthatwhichis]

Picture time?

[dnar]

Picture time?

Excuse the rough edges, I don't have a mill. This is a hand job. Excuse the "Swiss cheese" also, this plate has been through 4 different test builds with PBS etc.