Erbium and ytterbium Co-doped phosphate glass has a wide application due to its excellent properties. It is the best glass material for 1535 nm laser, mostly due to the porous wavelength of 1535 nm and high transmission in the atmosphere. It is also suitable for medicine.
Explanation
Er glass for 1550nm eye safe laser used for nanosecond range finder with passive or active q-switch and high repeat rates (1-6hz), flash lamps and diode pumped laser system.In dermatology, fractional laser and ance scar, skin, wrinkle and melisma treatment Er glass laser is applied. Different concentration and type (Cr14 and EAT14) can be customized.
Erbium and ytterbium doped phosphate glass has a wide application due to its excellent properties.Mostly, it is the best glass material for 1535 nm laser due to the porous wavelength of 1535 nm and high transmission in the atmosphere. It is also suitable for medical applications where the need for eye protection is difficult to manage, reduce or prevent important visual observations.
We can also produce erbium laser glass with doping various ions according to your need.WM4: Erbium phosphate glass for ion exchange purpose; Cr14: Xenon lamp pumping laser device and Erbium phosphate glass for laser range finder. Er 3+ Co – doped phosphate glass. CrE5 is for large energy output application.
Specifications
• Wide pump band
• High optical quality
• Long wavelength, works in high water peak area
• Ideal for removing hard tissues
• Very high slope efficiency
• Work within a relatively eye-shielding wavelength range
Applications
• Laser Surface Renewal
• Bone surgery
• Tooth use
Chemical and physical properties
| Feature | value | value | value | value |
| Products | CR14 | CrE5 | WM4 | EAT14 |
| Orientation | [100] veya [110] ± 0.5 ° | [100] veya [110] ± 0.5 ° | [100] veya [110] ± 0.5 ° | [100] veya [110] <± 0.5 ° |
| Bulk density | 3,10 g / cm 3 | 2,95 g / cm 3 | 2,83 g / cm 3 | 3,06 g / cm 3 |
| Mohs hardness | 8.5 | 8.5 | 8.5 | 8.5 |
| Young’s module | 57,6 GPa | 57,6 GPa | 57,6 GPa | 57,6 GPa |
| Tensile strength | 2 GPa | 2 GPa | 2 GPa | 2 GPa |
| Melting point | 1970 ° C | 1970 ° C | 1970 ° C | 1970 ° C |
| Thermal conductivity | 0.70 | 0.80 | 0.70 | 0.70 |
| Specific Heat/ (J · g -1 · K -1 ) | 0.59 | 0.59 | 0.59 | 0.59 |
| Thermal Expansion/ （10 -6 / ° C @ 25 ° C） | 127 | 87 | 96 | 95 |
| Thermal shock resistance parameter | 800 W / m | 800 W / m | 800 W / m | 800 W / m |
| Refractive Index @ 1535 nm | 1,530 | 1,533 | 1,528 | 1,524 |
Optical properties
| feature | value |
| Optical density | 0,1 ila 0,8 |
| Fluorescence life | 7.7-8.2 ms |
| concentrations | % 0.5 mol% ~ 3 mol% |
| Emission wavelength | 1535 nm |
| Coefficient of absorption | 1,0 cm -1 ～ 7 cm -1 |
| Emission state absorption cross section: | 0,75×10-20 cm 2 @ 1535nm |
| transmission | % 10 ila% 90 |
| coatings | AR≤% 0.2 @ 1535nm |
| Damage Threshold: | > 500 MW / cm 2 |
Polishing properties
| feature | value |
| Orientation Tolerance | <0,5 ° |
| Thickness / Diameter Tolerance | ± 0,05 mm |
| Surface Flatness | <λ / 832 nm |
| Ripple Distortion | <λ / 4 @ 632 nm |
| Surface quality | 05/10 |
| Parallel | 10 “ |
| Perpendicular | 15′ |
| Open aperture | >% 90 |
| groove | <0.1 x 45 ° |
| Maximum dimensions | dia (3-12.7) × （3-150） mm 2 |