on today's installment of parts that terrify me:

I don't actually know much about this LED, but it's certainly a very strong, possibly ultra low wavelength UV led. The incredibly clear cover-glass and the fact that the dies are water-cooled give off an eerie vibe.

I’m actually scared of figuring out the output power and wavelength by hooking it up to a lab supply. Anyone who knows what specs this could have? What part no it could be?

another glamour shot, I should do a focus stack! Also this device is both tiny and way too large at the same time, it’s also quite heavy!
@janamarie any idea what the small separate die in the bottom right is?
@jasper not really, could be a TVS diode
@janamarie @jasper I guess it is rather something to measure temperature
@josyb @jasper probably not, it is in parallel with the diodes, no extra pins