Making a laser more overspec?

[borgqueenx]

As you guys know, lasers are overspec. Some more then others.
Im wondering...
I had a lasever 532nm 550mw module wich was throwing out >700mW.
Now im getting 2 lasever 532nm modules of 600mW combined by a pbs cube, and they only throw out 1.22W. So after loss of the pbs cube they are only overspec by about 60mW together...
Im wondering since its probaly desame module size ect...if i can make the unit a bit more overspec myself?
Or is that not possible or even damaging?
If not possible please explain why..Same heatsink, same size...same module...? (actually even better...from 550mw to 600mw)

I could understand why they would sell desame module in different mw versions..probaly a upgraded diode/or whatever the heart of the module is.
But if 550mw can do >700mw without problem cant there be a way to increase the 600mw version to >700mw as well?

Thanks.

[LaNeK779]

i don't you can make it more overspec
you need to open it up, optimise the alignment of the crystals, tune the settings of the PID loop of the TECs both for diode pump and crystals
i know some people in PL can do it, but success is not guaranteed and it takes a hell of a long time to get it sweet-spotted and finely tuned.
not worth the hassle

i say leave it alone.

Try and think that a 500mw module may not be meant to be measured cw, but maybe made to yield 500mw when modulated

and try to get the "overclocking" mentality out of your head. there is no linear relationship between diode driver current and usable laser output, at least not with the cheaper eastern origin lasers

[borgqueenx]

Well okay^^ i hope chroma is then a bit wrong and 1.2w of 532nm will fit perfect with about 1.6w of 637nm... Too bad though.

[polishedball]

I like a 1:1 ratio with 532 and 638 myself.

And you can always turn up pump diode current till it pops. Wouldn't recommend but I am running a modified 150mw trilights unit at 320mw. I replaced the driver kept the factory TEC and tune. It was cheap and the original analog drive was awful so I put a die4drive in and cranked it. It will do more but didn't want to reduce life too much

[norty303]

@borgqueenx - is there any particular reason why you went for a combined green head? It seems to me that you've doubled the chances of it breaking by having 2 sets of diodes, xtals, tecs, drivers, etc. It's not as if 1.2W is that hard to come by, or even that expensive as a single module.

[borgqueenx]

Because its still a rather small module, and because i still get the 1.5mrad wich is actually 1.3. usally i have found 532nm's above 1w have about 2mrad.
Beam size is 2.5mm.

It fits my projector perfectly, more bigger and it would not fit^^

And its only 1 driver

[andy_con]

by over spec you mean over driving the diode

over driving means shorter life

[borgqueenx]

No i was thinking of how a unit could be made overspec "manually".

But overdrive is fine for me, just need to know how and how much those greenies can take

[flecom]

that should be more than enough green in reality... I have 1.5W of green for 1.2W of 642 and 2W of 650 (3.2W total red) and I still don't feel I have enough red!