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Er: YAG > Er:YAG

Introduction

Er: YAG is an excellent laser crystal which lasers at 2940 nm. This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. It has wide applications in medical applications such as dental(hard tissues) orthopedics etc.
 
 

Standard Specifications

  

Optical and Spectral Properties of Er:YAG Crystals

Items

Specifications

Laser Transition

4I11/2 to 4I13/2

Laser Wavelength

2940nm

Photon Energy

6.75×10-20J(@2940nm)

Emission Cross Section

3×10-20 cm2

Index of Refraction

1.79 @2940nm

Pump Bands

600~800 nm

Physical and Chemical Properties

Items

Specifications

Crystal Structure

Cubic

Lattice Parameters

12.01 Å

Melting Point

1970℃

Moh Hardness

8.5

Density

4.56±0.04g/cm3

Specific Heat (0-20)

0.59J/g.cm3

Modulus of Elasticity

310GPa

Young's Modulus

3.17×104Kg/mm2

Poisson Ratio

0.3(est.)

Tensile Strength

0.13~0.26GPa

Thermal Expansion Coefficient

[100]Direction:8.2×10-6/°C(0~250°C)

[110]Direction:7.7×10-6/°C(0~250°C)

[111]Direction:7.8×10-6/°C(0~250°C)

Thermal Conductivity

14W/m/K(@20°C)

10.5W/m/K(@100°C)

Thermal Optical Coefficient (dn/dT)

7.3×10-6/°C

Thermal Shock Resistance

790W/m

Solubility

Water: Insoluble;
Common Acids: Slightly

  
   

 

 

  
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Er:YAG
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