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Nd:Ce:YAG

Nd:Ce:YAG is an excellent laser material used for no-water cooling and miniature laser systems. The thermal distortion of Nd:Ce:YAG is appreciably less and the output laser energy is greater(30%-50%) than that in Nd:YAG at the same pumping. It is the most ideal laser material for air cooling laser and is also suitable for different modes of operation (pulsed, Q-switched, mode locked) and high-average power lasers.


Advantages

● Low threshold

● Very high slope efficiency(30%-50% more than Nd:YAG)

● Good anti-UV irradiation property

● Good thermal stability

● High optical quality 


Laser Rods

● Flat/flat

●Parallel/ anti-parallel wedged

●Brewster angle

●Concave/convex radii

●Cylinder grooved



Specifications

Material

Nd:Ce:YAG

Dopant concentration

Nd:1.0 - 1.1atm%  Ce:0.05-0.1atm%

Orientation

<111> or <100>

Dimension

Diameter:1mm-30mm Length:1mm-115mm(upon customer’s request)

Wavefront distortion

<λ/10 per inch@632.8nm

Extinction ratio 

>30dB (depends on actual sizes)

Diameter tolerance

+0/-0.04mm

Length tolerance

+0.5/-0mm

Chamfer

<0.1mm@45°

Chips

<0.1mm

Barrel finish

50-80 micro-inch(RMS)

Clear Aperture

>95%

Flatness

λ/10 per inch@632.8nm

Scratch/Dig 

10-5 @MIL-0-13830A

Perpendicularity 

<5 arc minutes

Parallelism

<10 arc seconds

Damage threshold

>750MW/cm2@1064nm 10ns 10HZ

Anti-Reflection coating

R<0.15%@1064nm per surface

High-Reflection coating

Standard HR coating with R>99.8%@1064nm and R<5%@808nm

Properties

Crystal Structure

Cubic

Lattice constant

12.01Å

Melting Point

1970°

Rupture stress

1.3-2.6*103 kg/cm2

Density 

4.55g/cm3

Mohs hardness

8.5

Thermal Expansion Coefficient

[100] Orientation--8.2x10-6/oC (0-250oC)

[110] Orientation--7.7x10-6/oC (0-250oC)

[111] Orientation--7.8x10-6/oC (0-250oC)

Laser transition

4F3/2 --> 4I11/2

Laser wavelength

1064nm

Photon energy

1.86×10-19J

Emission linewidth

4.5Å @1.064µm

Stimulated emission cross section

2.7-8.8x10-19 cm2 @Nd 1at%

Fluorescence lifetime

230µs

Refractive Index

1.8197 @1.064µm