Yttrium-Aluminum-Garnet ( Y3Al5O12)

Yttrium-Aluminum-Garnet Y3Al5O12, SurfaceNet GmbH Germany

Yttrium-Aluminum-Garnet Y3Al5O12, SurfaceNet GmbH Germany

Yttrium-Aluminum-Garnet Y3Al5O12, SurfaceNet GmbH Germany

Yttrium

Crystal properties

 

Crystal Type.

Crystal Structure

single crystal, synthetic

Lattice Parameters

a = 12.004 Å

Orientation

111, 100

Application

active laser crystals
(dopants: Nd, Tm, Ho, Er, Cr)
spectroscopy
vacuum windows

Solubility in Water

none 

Dielectric Constant

11.7

Elastic Coefficients

C11 = 3.33 GPa
C12 = 1.11 GPa
C44 = 1.15 Gpa

Young’s Modulus

300 Gpa

Hardness (Knoop)

1215 (8.5 Mohs)

Thermal Expansion.

7.8 ×10–6 / K (111)
7.7 ×10–6 / K (110)
8.2 ×10–6 / K (100)

Specific Heat

590 J / (kg K)

Thermal Conductivity

14.0 W / (m K)
13.0 W / (m K)

Molecular Weight

593.618

Melting Point

1940 °C / 1970 oC

Density

4.56 g/cm3

dn / dT.

9.86 ± 0.04 ×10–6 / K
7.3 ×10–6 / K

Refractive Index

1.8245   @ 0.8   µm
1.81523 @ 1.06 µm
1.8121   @ 1.4   µm

Transmission Range

0,25 ... 5 µm

Chemical Resistance

Inert

Max. of Emission (nm)

550

Decay Constant (ns)

70

Absorbtion Length (cm)

2.61

Relative Efficiency (%)

125

YAG LASER ROD

Chemical Composition

Y3Al5O12 (Yttrium Aluminium Garnet) 

Dopant

Neodymium, Erbium 

Dopant Concentration (atomic%)

0.4 ~ 1.1

Crystallographic Orientation

(111) ± 5°

Diameters available (mm)

2 ~ 12

Diameters tolerance (μm)

± 25

Lengths available (mm)

30 ~ 250

End Face Flatness

Within λ  / 10

Parallelism of end faces

10 arc seconds or less

End face perpendicularity

5 arc minutes or less

Extinction Ratio

30 dB Min.

Coating