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Nd:Ce:YAG

Nd:Ce:YAG is an excellent laser material used for no-water cooling and miniature laser systems. 

Low threshold

Very high slope efficiency

Good anti-UV irradiation property

Good thermal stability

High optical quality

Basic Properties:

Crystal Structure

Cubic

Lattice Parameters

12.01 Å

Melting Point

1970 °C

Moh Hardness

8.5

Density

4.56±0.04g/cm 3

Specific Heat (0-20)

0.59J/g.cm 3

Modulus of Elasticity

310GPa

Young's Modulus

3.17X10 4 Kg/mm 2

Poisson Ratio

0.3(est.)

Tensile Strength

0.13~0.26GPa

Thermal Expansion Coefficient

[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 )

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

The Sellmeier equations (°C in µm for YAG):

n ^2 = 2.08745 + 1.2081 °C ^2 /(°C^ 2 - 0.02119 )+ 17.2049 °C ^2 /(°C ^2 - 1404.45 )

Optical and Spectral Properties

Dopant concentration

Nd:1.1 ~ 1.4at%,Ce:0.05 ~ 0.1at%

Laser Transition

4 F 3/2 --> 4 I 11/2

Laser Wavelength

1.064µm

Photon Energy

1.86×10 -19 J@1.064µm

Emission Linewidth

4.5Å @1.064µm

Emission Cross Section (Nd1at%)

2.7~8.8×10 -19 cm -2

Fluorescence Lifetime (Nd1at%)

230µs

Index of Refraction

1.8197@1064nm

Ne:Ce:YAG Specifications:

Orientation:

<111> or <100]> crystalline within 5°

Wavefront distortion :

l /8 per inch @ 633 nm

Extinction Ratio:

>25dB

Dimension Tolerances

Rods with diameter: ±0.025 mm , Length: ±0.5 mm

Surface quality:

10/5 Scratch / Digper MIL-O-1380A

Parallelism:

< 10 arc seconds

Perpendicularity:

< 5 arc minutes

Flatness:

< l /10 @ 633 nm

chamfer:

<0.1 mm @ 45deg.

Barrel Finish:

50-80 micro-inch (RMS) ,

AR Coating Reflectivity

< 0.25%

 

Note: The other specification and dimension is available too

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