I had them off initially, then put them on for fear a collimated beam could hit an aircraft, the line lenses sure reduced the power density of each of the 450 nm beams. The 7.5 mm collimation lenses on the 800 nm FAP's had very high divergence at that wavelength, like about 16 mRad, so very quickly their outputs had too low of a power density to harm anyone
Gotta admire the work he did on the up-collimator (telescope). But if he was surprised at the performance of that CW fiber laser he should have grabbed an old-school Q-switched Laserscope (Z-fold resonator) and simply removed the KTP instead. The peak IR pulse power in those units easily topped 20 KW. Would have been a lot cheaper too...
Average as in joules sure, however it still depends on what you want to do, a million watt peak power tattoo remover @ 5ns pulse duration and 5hz is 2.5W average power so again depending on what you want to do with it vs. what your CW option is I can't say the pulsed laser would always be better........I would rather have a 2.5w argon/ion for cutting popcycle sticks but for marking tin cans in dot matrix text the pulsed yag.
Also, I was just kidding about the cocaine thing. I don't really think that's how he paid for the laser, that would be a.. strange accusation to make given that I have no reason or evidence to believe so, much less feel the need to call someone out like that even if I did have a reason to suspect it.