There are different types of combinations:
If undoped crystals are used as end caps, thermal effects can be reduced. Because of lower peak temperatures, thermal lensing and thermal fractures decrease. For thin-disk laser, an undoped end cap reduces ASE (amplified spontaneous emission). Such a laser is more mechanically stable and has less mechanical stress.
A crystal consisting of segments of different doping concentrations can be used for end-pumped solid-state lasers. The absorption of the pump power is smoothed so that there is consistent absorption in the crystal. Therefore, the temperature is spread evenly. The result is a higher output power, a higher pump efficiency, and a better beam quality.
If a bonded crystal consists of differnet dopands , one part is used as the laser gain medium while the other part is used as a saturable absorber for passively Q-switching. The size of the construction is effectively reduced but the flexibility is lost.
Impex offers following crystals:
- Nd:YAG + Cr:YAG
- YAG + Nd:YAG + YAG
- Nd:YVO4 + YVO4
- Nd:GdVO4 + GdVO4
You can also have a lock in our stock or send us your request.