Cr,Tm,Ho:YAG crystal products are high-efficiency laser crystals pumped by xenon lamps or diodes. They are laser crystals with good comprehensive performance.
Cr,Tm,Ho:YAG wavelength is 2.1 μm. The pump source mainly comes from the flash energy absorbed by Cr3+, Ho3+ is the working ion, and Tm3+ acts as the intermediary for energy transfer. two point one μm laser can be well absorbed by water, easy to penetrate the atmosphere, and safe for eyes.
In addition, for 3-5 μm mid infrared optical parametric oscillator, 2.1 μm laser is an ideal pump source. Cr,Tm,Ho:YAG crystal has the characteristics of wide absorption band, high slope efficiency, can be pumped by flash lamp or diode, operates well at room temperature and works in a wavelength range relatively safe to human eyes. Therefore, it is widely used in medical, lidar and other fields.
Laser Crystal Cr,Tm,Ho:YAG
APPLICATION
-
Laser radar
- Laser medicine
- 2100 nm laser for medical applications
KEY FEATURES
-
Wide absorption band
/ - The slope of high efficiency/
- Can use flash or diode pumped/
- 2.1 μm lasing wavelength is suitable for the eyes/
PRODUCT PARAMETERS
| 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 |
| 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 |
RECOMMENDED PRODUCTS
777 