(The following 4 photos provided courtesy of: Chris Harriman (firstname.lastname@example.org).)
This is the resonator assembly removed from an unidentified CO2 (probably) laser. It is sealed tube water cooled system with many temperature sensor outputs. Power output is probably in the 20 watt range. I picked this thing up at an auction 3 years ago and used its case for a project because I didn't have a power supply that would drive the laser. :)
(The following 3 photos provided courtesy of: Roger Vernon (email@example.com).)
This is the resonator assembly from a larger CO2 laser (manufacturer unknown) using a folded resonator design. It is probably capable of greater than 100 watts of output power. Note that the required mounting hardware and mirror alignment brackets are not shown.
(The following 3 photos and description provided courtesy of: Jim Kouris (gorilladiver@GorillaDiver.com).)
This is a 50 watt sealed glass CO2 laser tube with integral mirrors. It was originally designed for a medical application. Overall size is 35" long by 3.2" diameter. The tube requires an operating current of 7 to 20 mA at 15 to 20 kV and 30 kV to start.
(The following 6 photos provided courtesy of: Dave Johnson (firstname.lastname@example.org).)
Here are some details on a tube similar to the one above but rated at 35 W. Tubes up to at least 120 W are physically similar though their size and power requirements are greater. The tube is made by SurgiLaser (Warwick, RI) and mates with a Universal Voltronics BRC-30-25-S power supply, a compact switchmode type with a large flyback for the high voltage. According to the schematic, there is no output filtering or ballast resistor - the tube connects directly to the flyback transformer with its built-in HV rectifiers.
Power supply specs:
And finally, the photos:
Here are some partial specs for a similar, but larger tube (no photos available):
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