two green DPSS lasers, crystalaser 25mW units, lab style, great quality

[shrad]

Pump diode in pristine condition

Doing less than the rated power due to adjustments needed in crystal temperatures and/or slight alignment of the crystals, but this should be optimal already (actual statement mihgt be false and they could do more than 25mW as I have no mean of checking... in comparison to a 50mW known pointer those lasers are slightly brighter!)

They are normally SLM but I can't judge this, I acquired them from surplus industrial metrology but they are not worn out by a life of use, rather upgrade replacements I guess, that I realigned carefully following all the rules for that kind of business

I aligned them and adjusted temperatures for max power and stability, and for best beam quality, so they are in decent shape for anyone wanting to do holography or spectrometry

The cavity design is OC less so I think the coatings are on the KTP, there are two TECs to regulate diode and KTP, and the KTP is on a sapphire plate

Reaction time of these heads to TEC temperature is incredibly fast so it is easy to adjust them and get visual results fast

The overall design is of high quality lab grade ans M2 of those lasers is small, and beam diameter is around 0.5mm at the output with low divergence

I sell them for 100€ a piece, with lab driver and no warranty about the modes of the cavity (the beam is pure gaussian when expanded, though, and should stay like that for long... artefacts in the expanded image are due to crappy lens put in front)

Here are pics :

[FutureDesign]

What a shame that you opened them up in a non clean room environment.

[shrad]

They had already been opened up and the previous guy did probably tamper with screws as the head was nor producing rated power and beam quality.. if they were on spec and unopened, they wouldn't be sold at that price

Anyway who owns a clean room here? Not much people I guess... As long as your room is clean, humidity is not low and you don't wear the last angora woolen pull-over your grandma made for you, and there is no door opening and whatsoever and you push a fresh clean burst of canned air before closing back the cover, it's all you really can do at home (or you have some cash behind to transform your basement into a clean room and I envy you)

EDIT : they have been sold on another place btw, so this thread's life will continue as a one shot laser porn for amateurs of opened heads