Yb:CALGO
Yb:CaGdAlO4 (Yb:CALGO) widens the family of ytterbium doped laser materials grown in Crytur. Itis a broadband gain material for ultrafast solid-state lasers , combining broad emission bandwidth, favorable thermo-optical properties, and long fluorescence lifetime.
Technical parameters
The broad gain spectrum of Yb:CALGO makes it particularly attractive for sub-picosecond and femtosecond laser systems.
Yb:CALGO preserves broadband gain at low temperature, making it highly suitable for cryogenically cooled ultrafast femtosecond laser amplifiers.
Material properties
| Crystal structure | tetragonal |
| Laser wavelength range | 999 - 1110 nm (modulated) |
| Main pump absorption bands | 975 - 985 nm, peak absorption at 981 nm |
| Thermal conductivity at 300 K | 6.7 W/m·K |
| Refractive index at 1000 nm and 300 K | 1.93 |
| Temperature dependence of refractive index (dn/dT) | 7.6 10-6/K |
| Fluorescence lifetime at 300 K | 420 µs |
Laser elements - discs, rods, slabs are curently limited to 3x10x8 mm. Surfaces can be fine ground or polished. Ion assisted coating can be applied.
