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[China]
Address: No.200, Zgaoxian Road, Jiading Zone, Shanghai, China
Contact name:sales
Nanjing Crylink Photonics Co.,Ltd |
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Ti:Sapphire (Titanium doped Sapphire, Al2O3:Ti3+) has a wide range of emission band from 660 to 1050 nm, which faciitates a variety of existing and potential applications, such as tunable continuous-wave lasers, mode-locked oscillators, chirp-pulse amplifiers, thin disk oscillators/amplifiers and lidars. Moreover, the absorption band of Ti:Sapphire is centered at 490 nm, ranging from 400 to 650 nm, which makes it suitable for pump sources of many different lasers, for example, argon ion, frequency doubled Nd:YAG (Nd:YLF), and copper vapor lasers. Because of 3.2 s fluorescence lifetime, Ti:Sapphire crystals can be effectively pumped by flash lamps in high-power laser systems.
In order to obtain good quality of Ti:Sapphire crystals, the Ti3+ doping concentration has to be kept fairly low (e.g. 0.15% or 0.25%). Therefore limited pump absorption usually enforces the use of a crystal length of several millimeters, which in combination with the small pump spot size (for high pump intensity) means that a rather high pump brightness is required. Fortunately, Sapphire has also an excellent thermal conductivity, alleviating thermal effects even for high laser powers.
Features
Applications
Parameters
Property | Value |
Chemical formula | Ti3+:Al2O3 |
Crystal structure | hexagonal |
Orientation | A-Axis within 5°E-vector parallel to C-Axis |
Mass density | 3.98 g/cm3 |
Moh hardness | 9 |
Young's modulus | 335 GPa |
Tensile strength | 400 MPa |
Melting point | 2040°C |
Thermal conductivity | 33 W/(mK) |
Thermal expansion coefficient | ≈5×10-6K-1 |
Thermal shock resistance parameter | 790 W/m |
Refractive index at 633 nm | 1.76 |
Temperature dependence of refractive index | 13×10-6K-1 |
Ti density for 0.1% at. doping | 4.56×1019cm-3 |
Specifications
Property | Value |
Fluorescence lifetime | 3.2 s |
Emission wavelength | 660~1100 nm |
Central emission | 800 nm |
Concentrations | (0.05~0.35) wt% |
End Configuration | Flat/Flat or Brewster/Brewster ends |
Emission cross section at 790 nm (polarization parallel to the c axis) | 41×10-20cm2 |
Absorption Coefficient | 0.5～6.0 cm-1 |
Central absorption wavelength | 490 nm |
Figure of Merit(FOM) | 100~300 |
Coatings | Standard coating is AR with R < 5.0% each face @532 nm and R < 0.5% each face, from 650 nm to 850 nm. Custom coatings supported. |
Polishing Specification
Property | Value |
Orientation Tolerence | <0.5° |
Thickness/Diameter Tolerance | ±0.05 mm |
Surface Flatness | </8 @632 nm |
Wavefront Distortion | </4 @632 nm |
Surface Quality | 10/5 |
