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Cr,Tm,Ho:YAG
Cr, Tm, Ho: YAG – Laser Crystal – Gain Medium – Customized Products
Product ID: 6590
$100
Cr, Tm, Ho: YAG – Laser Crystal – Gain Medium – Customized Products
Cr, Tm, Ho: YAG is a high efficient laser crystal pumped by a Xenon lamp or diode with a wavelength of 2.1μm. The pump source mainly originates from the flashlamp energy absorbed by Cr3+, Ho3+ is a working ion, and Tm3+ acts as an intermediary to transfer energy. 2.1 μm laser wave can be absorbed by water very well, transmits atmosphere easily, and is safe to the eye. Therefore, it is widely used in medical treatment, laser radar, the military, etc. Moreover, a 2.1 μm laser is an ideal pump source for a 3-5 μm mid-infrared optical parametric oscillator.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
Features
Wide absorption band
Working at room temperature
2.1 mm lasing wavelength is for the eye
High slope efficiency
It can be pumped by a flashlamp or diode
Material Specifications
| Doping Concentration | Ho:0.3~0.4at% Cr:0.3~1.2at% Tm:5~6at% |
| Wavefront Aberration | <λ/4@632nm |
| Extinction Ratio | ≥25 dB |
| Size | Diameter:3~6mm,Length:50~120mm |
| Size Tolerance | Diameter:+0.00/-0.05mm, Length: ± 0.5mm |
| Precision Grinding | 50-80 Micro Inches(RMS) |
| Parallelism | ≤30″ |
| Perpendicularity | ≤5′ |
| Flatness | λ/10@ 633 nm |
| Surface Finish | 10/5 Scratch / Digper MIL-O-1380A |
| Chamfer | 0.006″±0.002″ at 45°± 5° |
| High Permeable Film Reflectivity | ≤ 0.25% (@2094nm) |
Physical and Chemical Properties
| Structure | Cubic |
| Lattice Constant | 12.01Å |
| Melting Point | 1970°C |
| Density | 4.56g/cm3 |
| Orientation | <111> or <100]> 5° |
| Thermal Expansion | 7.8×10-6 /K |
| Coefficient of Thermal Conductivity | 14W/m/K, 20°C；10.5W/m/K, 100°C |
| Mohs hardness | 8.5 |
| Dielectric Constant | 11.7 |
Optical and Spectral Properties
| Laser Transition | 5I7 → 5I8 |
| Laser Wavelength | 2.094 µm |
| Photon Energy | 9.55 x 10–20 J |
| Radiation Cross Section | 7 x 10-21 cm2 |
| Fluorescence Lifetime | 8.5 ms |
| Refractive Index | 1.80 @2.08 µm |
| Aperture | >90% |
| Absorption Line Width | 4 nm |
| Diode Pump Band | 781 nm |
| Main Pump Belt | 400~800 nm |
Absorption and Emission Spectra
