I have on order a <500mW green, 532nm DPSS, that will be portable and battery powered. I say <500 because I don't want to carry around a portable Class IV. It will have thermal cooling, so can run about 1-2 hours on a charge. I may even see if it can have an AC-Power option. It will also have adjustable output.
I needed the portability because I will be using it on roofs for aligning antennas. I will also take it with me to the laser lab occasionally (and much more when I start graduate work), to do a bit of research on frequency shifting.
I was thinking later of using it for some simple laser shows. However, after talking with an expert, I was told that it's not the best option.
So if we have a 450mW that is made for distance, so has smallest divergence, can run 1-2 hours on a charge, and has TEM00, why would this blow as a light-show laser?
Is the green light of different quality from the portable unit as it would be from a module costing much more?
I won't be doing anything serious as far as shows. Maybe work with a musician to create some laser effects in a bar or so, to make some extra $20 or so.