Description

Brand Name: MLHJ
Origin: CN(Origin)
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: china source brands
Keyword 2: Solid State Laser
Keyword 3: laser tag

Er Yag 2940 nm Laser for tattoo laser removal machine

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: Er Yag 2940 nm Laser for tattoo laser removal machine

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 : Er Yag 2940 nm Laser for tattoo laser removal machine

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 : Er Yag 2940 nm Laser for tattoo laser removal machine

Property	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 : Er Yag 2940 nm Laser for tattoo laser removal machine

Property	Value
Concentrations	50 at.% (highly doped); (0.1~1) at.% (low doped)
Laser transition	⁴I_11/2 → ⁴I_13/2 (highly doped) ⁴I_13/2 → ⁴I_15/2 (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 : Er Yag 2940 nm Laser for tattoo laser removal machine

Property	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%
Chamfer	<0.1×45°

Standard products : Er Yag 2940 nm Laser for tattoo laser removal machine

Doped concentration	Dimensions	coating	Surface quality
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