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Neodymium doped Yttrium Aluminum Garnet ( Nd:YAG )

 

Basic Properties

Chemical Formula

Y3A15O12

Crystal structure

Cubic

Lattice constant

12.01

Melting Point

1970 C

Density

4.5 g/ cm

Reflective Index

1.82

Thermal Expansion Coefficient

7.8 x 10-6 /K<111>

Thermal Conductivity (W/m/K)

14 W/m/K, 20 C
10.5 W/m/K, 100C

Mohs hardness

8.5

Stimulated Emission Cross Section:

2.8 x 10-19 cm-2

Radiative Lifetime

550 ms

Spontaneous Fluorescence

230 ms

Linewidth

0.6 nm

Loss Coefficient

0.003 cm-1 @ 1064 nm

Spectra Properties with concentration

Nd: Dopant

2.5 at%

2 at%

1.5 at%

1.3 at%

1.1 at%

1 at%

Fluorescence lifetime

160 ms

180 ms

200 ms

210 ms

220 ms

240 ms

Absorption Coefficient.

7.55 cm-1

6.57 cm-1

5.36 cm-1

4.66 cm-1

3.88 cm-1

3.55 cm-1

Nd:YAG Specifications

Diameter

f3 12 mm

Lenght

1 152 mm

Crystallographic orientatio

<111> 30 arc minute

Nd Dopand Level

1.0 0.1 atm%

Extinction Ratio

>28 dB

Optical quality

<0.5 fringes / inch

Diameter tolerance

0.05 mm

Length tolerance

0.7 mm

End face perpendicularity

< 5 arc minutes

Parallelism

<10 arc seconds

Wavefront distortion

l/8

Flatness

l/10

Sccratch/Dig

10/5 @MIL-O-13830A

HR-Coating

R>99.8% @ 1064 nm and R<5% @ 808 nm

AR-Coating (Single layer MgF2)

R<0.25% per surface (@ 1064 nm)

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