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Diffusion bonded crystals Diffusion bonded crystal are crystals consisting of two,Website:http://www.meta-laser.com,three or more parts with different doping, usually one laser crysta and one or two undoped crystals combined by optical contact and further bonded under high temperature.Diffusion bonding process:Perfect optical contact between the crystals to be bonded;Heating up of the two parts very slowly , to a very high temperature, probably 2/3 of the melt temperature or more, and exerting pressure to press the two parts together;Keeping the bonded crystals for certain period of time at th