The lasers on this page are fully assembled but untested. They are research lasers obtained from the estate of Peter Chenousky. His company Q-Source designed lasers for other researchers, NASA, the U.S. Navy, and many other commercial interests. Some lasers are still sealed and may yet contain a vacuum and/or inert gases. We have no idea as to the mixture ratios of any gas, but Helium, Xenon, CO2 were known to be used. We have not attempted to match any of the power amplifiers with any particular laser. We do know that much of the frequency generation and amplification equipment was reused to supply output to multiple lasers. Laser power ranged from several watts in the smaller lasers to hundreds of watts in case of the larger lasers. Some of the equipment is in the 1KW laser output range, some devices are not lasers themselves, but are optical amplifier devices to strengthen an already generated laser beam. All the output wavelengths are in the infrared range. Buyer assumes all risks associated with powering and using these devices. These are NOT commercial products, they ARE DANGEROUS; we assume the buyer has extensive knowledge in the laser field and these devices will be used as research devices; saving the tooling costs of creating vacuum chambers and mirror mounting end walls/caps. Lasers are not returnable.