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 this high temperature, so that diffusion takes place;Slowly cooling the crystals (24 hours) down to room temperature.Advantages of diffusion bonding crystals:High damage threshold;Improve beam quality;Decrease thermal effect;Improve efficiency;Compact size.Standard Diffusion Bonded Crystals:Cr4+:YAG +Nd:YAGYAG + Nd:YAG + YAGYb:YAG + YAGYb:YAG + Cr4+:YAGYVO4 + Nd:YVO4 + YVO4V:YAG+Nd:YAGV:YAG+Yb:YAG