Neos pcoam help!!!

[onelightmind]

I have a small white system I want to upgrade... 500mw multiline argon and a 30 mw HeNe. The NEOS has a dip switch for 647nm and 632nm HeNe and Kr I suppose... i want to upgradt the Weak little HeNe to a diode wil the Neos driver adjust the RF that far off (650mw)?? Are there diodes that will do 647nm or 632nm to be had?? 200mw or so?

Thanks for all your help!

[DZ]

You may end up having to settle for directly modulating the diode instead of sending it through the pcaom. If you go with 660nm diodes, which have pretty good beam specs, you can combine them via a pbs cube. Or you could get a 635nm diode which appears much brighter than the 660nm diodes, however the beam quality isn't so good. Then there's the 640nm diode, great beams specs and still appears much brighter than 660nm. Either way, you may run into an issue where your green and blue lines are a good bit faster than a directly modulated diode, but that can be fixed.

I have a small white system I want to upgrade... 500mw multiline argon and a 30 mw HeNe. The NEOS has a dip switch for 647nm and 632nm HeNe and Kr I suppose... i want to upgradt the Weak little HeNe to a diode wil the Neos driver adjust the RF that far off (650mw)?? Are there diodes that will do 647nm or 632nm to be had?? 200mw or so?

Thanks for all your help!

[onelightmind]

I see you newly designed board may be the ticket huh.

[onelightmind]

If I go with direct modulation for blanking what about color mixing? What are the requirements for the red diode for correct color mixing and blanking?

[DZ]

Well, you will want one with analog modulation, and you'll have to mix in the red after the pcaom, so it may be a bit tricky, but I've seen it done. With a 500mW argon, asuming a nice balance in green and blue, I'm guessing you'd want around 250mW of 635, or close to a watt of 660nm. Not sure about 640nm, maybe around 300 to 325mW. One important thing would be to look for a red laser that has adjustable focus, so you can get it to somewhat match the divergence of the argon.

[mixedgas]

the neos channel bandwidth is supposed to be 4 nm FWHM. So 635 might be just fine if you can tweek the angle a bit and live with some small loss. 655 would be pushing it for sure, and is best self modulated.

Steve