Description
diode laser pumped Er Yag 2940nm Laser for cold laser therapy
- Certification: CE
- Place of Origin: Shanghai, China
- Condition: New
- Warranty: 6 Months
- After-sales Service Provided: Online support
- Spare Parts Type: crystal
- Video outgoing-inspection: Not Available
- Machinery Test Report: Not Available
- Marketing Type: New Product 2021
- Brand Name: Metalaser
- Key Selling Points: High-accuracy
- Showroom Location: None
- Applicable Industries: Other, Laser Equipment Parts
- Weight (KG): 0.01 KG
- Refractive Index: 1.7838@2940 nm
- Extinction Ratio / dB: 30
- Orientation: [100] or [111] < ±0.5°
- Coatings: <0.25%@2940 nm
- Surface Quality: 10/5
- Chamfer: <0.1*45°
- Thickness/Diameter Tolerance: ±0.05 mm
- Keyword 1: cold laser therapy
- Keyword 2: Solid State Laser
- Keyword 3: yag laser crystal
Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
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.
Features: Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
Ø Works in a relatively eye-safe wavelength region
Ø Strongly absorbed by water, hydroxyapatite and human body fluid
Ø Wide pump band from 600~800 nm
Ø Works well under room temperature
Ø High slope efficiency
Ø Good optical quality
Applications : Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
Ø Medical laser systems including skin disorder therapy, hard tissue removal, blood sugar monitoring, orthopedics
Ø Dental laser systems including tooth enamel, cosmetic surgery
Chemical and physical properties : Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
|
Value |
|
|
Chemical formula |
Er3+:Y3Al5O12 |
|
Crystal structure |
cubic – la3d |
| Lattice parameters | 12.01 Å |
| Density | 4.56-5.11 g/cm3 |
| Melting Point | 1950 °C |
| Refractive Index | 1.7838@2940 nm |
| Thermal Conductivity /(W·cm-1·K-1@25°C) | 0.14 |
| Specific Heat/ (J·g-1·K-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 : Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
| Property | Value |
| Concentrations | 50 at.% (highly doped);
(0.1~1) at.% (low doped) |
| Laser transition | 4I11/2 → 4I13/2 (highly doped)
4I13/2 → 4I15/2 (low doped) |
| Emission wavelength | 2940 nm (highly doped)
1645 nm (low doped) |
| Pump wavelength | 600~800 nm (highly doped)
1530 nm (low doped) |
| Fluorescence lifetime | 0.23 ms (highly doped)
2~5 ms (low doped) |
| laser transition peak cross section, σl (E-20 cm2) | 3 |
| Coatings | < 0.25% @ 2940 nm |
Polishing Specification : Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
|
Value |
|
|
Orientation Tolerance |
< 0.5° |
|
Thickness/Diameter Tolerance |
±0.05 mm |
|
Surface Flatness |
<λ/8@632 nm |
|
Wavefront Distortion |
<λ/4@632 nm |
|
Surface Quality |
10/5 |
|
Parallel |
10 ″ |
|
Perpendicular |
5 ′ |
|
Clear Aperture |
>90% |
|
<0.1×45° |
Standard products : Diode laser pumped Er Yag 2940nm Laser for cold laser therapy
|
Dimensions |
coating |
Surface |
|
|
50 at.% |
Diameter:3~6 mm, Length:50~120 mm |
<0.25%@2940 nm |
10/5 |
|
0.1~1 at.% |
Diameter:3~6 mm, Length:50~120 mm |
<0.25%@2940 nm |
10/5 |
|
customer designed products available |
|||
Absorption Spectrum of 50% Er3+ YAG crystal
