Er:YAG
Our Er:YAG crystal, also called erbium-doped yttrium aluminum garnet, has the chemical formula Er:Y₃Al₅O₁₂ and is a laser crystal with good overall performance. It is widely used in plastic surgery and dentistry. Er:YAG is erbium-doped YAG that can generate 2940nm laser light for medical and dental applications. Combining different output wavelengths with Er:YAG yields an excellent laser crystal operating at 2.94μm. This wavelength is the most readily absorbed by water and hydroxyapatite among existing wavelengths and is also regarded as a laser for surface cutting. Er:YAG is a well-known material for medical applications. Its emission wavelength of 2940nm lies at a water-absorption peak and is strongly absorbed by water molecules. It features a high doping concentration, excellent optical quality, excellent thermal and optical properties, and high output and damage thresholds. Applications include glaucoma surgery and 2940nm laser penetrating corneal transplantation. Our current projects include a laser blood-sampling device using a structure with coatings on both sides of an Er:YAG rod and end pumping by a xenon lamp. The Er:YAG laser wavelength is an excellent option for improving various skin conditions and signs of aging, including dyspigmentation, actinic photodamage, solar elastosis, acne and traumatic scarring, fine lines, mild to moderate wrinkles, rough skin texture, and skin laxity.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Direction | [100] or [100] <± 0.5^。 |
| Parallelism | 10〞 |
| Perpendicularity | 5ˊ |
| Wavefront distortion [@632 nm] | <λ/8@632 nm |
| Surface Flatness [@632.8nm] | <λ/10@632.8nm |
| Clear Aperture Dimension | >90% |
| Chamfer [@45°] | 0.1mm@45° |
| Thickness / Diameter Tolerance | ±0.05 mm |
| Maximum dimensions | Diameter :2mm-50mm, Length :5mm-180mm |
| Coating [@2940 nm] | < 0.25% @ 2940 nm |
| Laser transition | ⁴I₁₁/₂ → ⁴I₁₃/₂ (high doping); ⁴I₁₃/₂ → ⁴I₁₅/₂ (low doping) |
| Laser Wavelength | 2940 nm (high doping); 1645 nm (low doping) |
| Photon energy [@2940nm] | 6.75×10⁻²⁰J@2940nm |
| Pump absorption bandwidth | 600~800 nm (high doping); 1530 nm (low doping) |
| Damage Threshold | >500MW/cm² |
| Fluorescence lifetime | 0.23 ms (high doping); 2~5 ms (low doping) |
| Refractive index [@2940 nm] | 1.7838@2940 nm |
Applications
Key Features
Datasheet
Supplier Information
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