Cr Concentration | 0.85% | Tm Concentration | 5.90% |
Ho Concentration | 0.36% | Wavefront Distortion (Per inch of rod length) | <I/2 |
End Face Parallelism | <10 arc seconds |
Physical and Optical Properties:
Crystal Structure | Cubic | Lattice Parameters | 12.01 Å |
Melting Point | 1970℃ | Moh Hardness | 8.5 |
Density | 4.56g/cm3 | Specific Heat (0-20) | 0.59J/g.cm3 |
Modulus of Elasticity | 310GPa | Poisson Ratio | 0.3(est.) |
Tensile Strength | 0.13~0.26GPa | Thermal Expansion Coefficient | [100]Direction:8.2x10-6 /°C(0~250℃) [110]Direction:7.7x10-6 /°C(0~250℃) [111]Direction:7.8x10-6 /°C(0~250℃) |
Thermal Conductivity | 14W/m/K(@20℃) 10.5W/m/K(@100℃) |
Thermal Optical Coefficient (dn/dT) | 7.3x10-6 /C° |
Thermal Shock Resistance | 790W/m | Solubility | Water: Insoluble; Common Acids: Slightly |
Laser Transition | 5I7 - 5I8 | Laser Wavelength | 2.097μm |
Photon Energy | 9.55 x 10-20 J | Emission Cross Section | 7 x 10-21 cm2 |
Fluorescence Lifetime | 8.5 ms | Index of Refraction | 1.80 @2.08μm |
Absorption Linewidth | 4nm | Pump Wavelength | 781nm |
Major Pump Bands | 400~800nm |
Cr:Tm:Ho:YAG, CTH:YAG is a kind of excellent laser crystal emitting at 2.1um wavelength. The addition of cerium as a dopant in the YAG crystal matrix enhances certain performance aspects. Due to its advantages including high slope efficiency, fitness for operation at room temperature, and output eye-safe wavelength laser light, CTH: YAG crystals find widespread applications in various laser systems, including solid-state lasers used in medical procedures (such as dermatology and ophthalmology), laser cutting and welding, and scientific research applications. Shanghai North Optics offers the CTH:YAG rods tailored upon customers' request.
The Advantages of CTH: YAG
Application Notes:
Laser Crystal Comparison Chart: