Coherent Sapphire 488- 20 OPSL laser system 

This system is running great with a power level above factory specs. I measured 25.8mw with one meter and 27.1mw with an Ophir meter which is a little more accurate than the Scientech. The Scientech meter had to be set to 200mw instead of 20mw or it would "overload" with power over 20mw. The reading with 200mw will not be as accurate.

I paired the laser head with a heat sink that performs so well you don't need a fan and remains cool to the touch. The heatsink itself weighs more than 2 pounds. I also used a very efficient thermal transition paste thinly applied. 

Comes with everything shown to plug and play. Power readings were taken after about a 15 minute warm up. The laser will take up to a few minutes for laser emission to occur as the crystals etc. have to balance temperatures typical of OPSL type systems.