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Triple doped Cr3+,Tm3+, Ho3+:YAG is an efficient solid-state laser medium for 2097nm generation, widely used in military, medicine, and remote sensing applications. High spectral overlap of pump radiation (lamp or diode) with the Cr3+ and Tm3+ absorption bands, and a highly efficient conversion from the absorption bands into the 5I7 -> 5I8 Ho3+ emission band, enables 2 micron laser architectures with high quantum efficiency. [1], [2]
SMC provides high quality CTH:YAG for your prouction and/or development efforts.
Contact us with your specific requirements or for availability and pricing.
| Cr3+ Concentration | 0.85% |
| Tm3+ Concentration | 5.9% |
| Ho3+ Concentration | 0.36% |
| Emission Wavelength | 2.080 μm |
| Laser Transition | 5I7 → 5I8 |
| Flouresence Lifetime | 8.5 ms |
| Pump Wavelength | flash lamp or diode pumped @ 780nm |
| Coefficient of Thermal Expansion | 6.14 x 10-6 K-1 |
| Thermal Diffusivity | 0.041 cm2 s-2 |
| Thermal Conductivity | 11.2 W m-1 K-1 |
| Specific Heat (Cp) | 0.59 J g-1 K-1 |
| Thermal Shock Resistant | 800 W m-1 |
| Refractive Index @ 632.8 nm | 1.83 |
| dn/dT (Thermal Coefficient of Refractive Index) @ 1064nm | 7.8 10-6 K-1 |
| Molecular Weight | 593.7 g mol-1 |
| Melting Point | 1965°C |
| Density | 4.56 g cm-3 |
| MOHS Hardness | 8.25 |
| Young’s Modulus | 335 Gpa |
| Tensile Strength | 2 Gpa |
| Crystal Structure | Cubic |
| Standard Orientation | <111> |
| Y3+ Site Symmetry | D2 |
| Lattice Constant | a=12.013 Å |
1) CTH:YAG was initially suggested by, B. M. Antipenko, et. al. , Zh. Tekh. Fiz. Pis'ma, 11, 682 (1985)
2) An overview of the cross relaxation energetics is given by, A. A. Kaminskii, "Crystalline Lasers: Physcial Processes and Operating Schemes", CRC Press, New York, (1996), ISBN 0-8493-3720-8. Chapter 8.2.
Laser Materials
