Erbium-Doped Yttrium Aluminium Garnet (Er: YAG) Laser Crystal
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  • Erbium-Doped Yttrium Aluminium Garnet (Er: YAG) Laser Crystal

Erbium-Doped Yttrium Aluminium Garnet (Er: YAG) Laser Crystal | ALB-Er-YAG-CR

Item number: ALB-Er-YAG-CR. Erbium-Doped Yttrium Aluminium Garnet (Er: YAG) Laser Crystal. Formula: Er: YAG. Shape: Wafer (slice or substrate) boule and crystal form. Quantity: 10pc, 100pc, 1000pc.

Erbium-Doped Yttrium Aluminum Garnet (Er: YAG) Crystal | Laser Crystal Material

Highly doped (50%) Erbium YAG is a well-known laser source for producing 2940nm emission, commonly used in medical(e.g. cosmetic skin resurfacing), and dental (e.g. oral surgery) applications due to the strong water and hydroxapatite absorption at this wavelength.

Main properties of Er: YAG Crystal:

Crystal structure Cubic
Crystal lattice parameters 12.01 Å
Orientation <111> or <100> crystalline within 5°
Melt point 1970°C
Hardness mohs 8.5
Density 4.56±0.04 g/cm3
Specific heat 0.59 J/g.cm3
Modulus of elasticty 310 GPa
Young modulus 3.17X104Kg/mm2
Tensile strength 0.13~0.26 GPa
Thermal expansion <100> Direction:  8.2x10-6 /°C(0~250°C)
  <110> Direction:  7.7x10-6/°C(0~250°C)
  <111> Direction:  7.8x10-6/°C(0~250°C)
Thermo-optical coeffecient 7.3×10-6/°C
Laser wavelength 2940nm
Index of refraction 1.79 @2940nm
Emission cross section 3 x 10 -20 cm2

 

Er:YAG Specifications:

Dopant Concentration

Er: 20 at% and 50 at%

Wavefront Distortion

≤0.125λ/inch(@1064nm)

Extinction Ratio

≥25 dB

Rod Sizes

Diameter:3~6mm, Length:50~120 mm 
Upon request of customer

Dimensional Tolerances

Diameter:+0.000"/-0.002", 
Length: ± 0.02" 

Barrel Finish

Ground Finish: 400# Grit

Parallelism

≤10"

Perpendicularity

≤5′

Flatness

λ/10

Surface Quality

10/5(MIL-PRF-13830B)

Chamfer

0.006"±0.002" at 45°± 5°

AR Coating Reflectivity

≤ 0.25% (@2940nm)

Notes:
1. To inquire a finished crystal, please provide specifications as listed above. For most applications, we only need to know the following: (1)dopant concentration;  (2)sizes;  (3)surface quality;  (4) coating.
2. For special request, please provide detailed specification for evaluation and fabrication.

Download MSDS

ALB-Er-YAG-CR

Data sheet

Item Number
ALB-Er-YAG-CR
Formula
Er
Size
custom-made
Shape
Wafer (slice or substrate) boule and crystal form

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