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Growing crystal, Lingling Value.
6 Years
| Ask Lasest Price | |
| Brand Name : | CRYLINK |
| Certification : | Iso9001 |
| Price : | negotiation |
| Delivery Time : | 3-4 weeks |
| Payment Terms : | TT |
| Supply Ability : | 100 pieces /month |
| Model Number : | CRYLINK-Er YAG Laser Crystal |
Erbium-doped Yttrium Aluminum Garnet (Er:YAG) is a pale green crystal with various output wavelength. Typically, highly doped Er:YAG, about 50% Yttrium atoms replaced by Erbium, is used as laser medium for 2940 nm wavelength. Due to the strong water and human body fluid absorption at this wavelength, Er:YAG laser has a wide dental and medical applications.
For example, low doped Er:YAG, about (0.1~1)% Yttrium atoms replaced, plays an efficient role in generating high power 1600 nm 'eye-safe' laser. The excellent optical and mechanical properties and a wide pump band of 600~800 nm make Er:YAG an ideal laser crystal.
Absorption Spectrum of 50% Er3+:YAG crystal
| Features Works in a relatively eye-safe wavelength region Strongly absorbed by water, hydroxyapatite and human body fluid Wide pump band from 600~800 nm Works well under room temperature High slope efficiency Good optical quality | Applications Medical laser systems including skin disorder therapy, hard tissue removal, blood sugar monitoring, orthopedics Dental laser systems including tooth enamel, cosmetic surgery |
Chemical and physical properties
Property | Value |
Chemical formula | Er3+:Y3Al5O12 |
Crystal structure | cubic - la3d |
Lattice parameters | 12.01 |
Density | 4.56-5.11 g/cm3 |
Melting Point | 1950°C |
Refractive Index | 1.7838@2940nm |
Thermal Conductivity /(Wcm-1K-1 @25°C) | 0.14 |
Specific Heat/ (Jg-1K-1) | 0.59 |
Thermal Expansion /(10-6 /°C @25°C) | 7.8 |
Hardness (Mohs) | 8.5 |
Young`s Modulus /GPa | 317 |
Shear Modulus / GPa | 54.66 |
Extinction Ratio / dB | 30 |
Orientation | [100] or [111] < ±0.5° |
Poisson Ratio | 0.25 |
Laser properties
Property | Value |
Concentrations | 50 at.% (highly doped); 0.1~1 at.% (low doped) |
Laser transition | 4I11/2 4I13/2 (highly doped) |
Emission wavelength | 2940 nm (highly doped) |
Pump wavelength | 600~800 nm (highly doped) |
Fluorescence lifetime | 0.23 ms (highly doped) |
laser transition peak cross section, l (E-20 cm2) | 3 |
Coatings | < 0.25% @ 2940 nm |
Polishing Specification
| Property | Value |
Orientation Tolerance | < 0.5° |
Thickness/Diameter Tolerance | ±0.05 mm |
Surface Flatness | </8 @632 nm |
Wavefront Distortion | </4 @632 nm |
Surface Quality | 10/5 |
Parallel | 10 |
Perpendicular | 5 |
Clear Aperture | >90% |
Chamfer | <0.1×45° |
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