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Nd:Ce:YAG - Neodymium, Cerium Co-doped Yttrium Aluminum Garnet

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Nd:Ce:YAG - Neodymium, Cerium Co-doped Yttrium Aluminum Garnet
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  • Nd:Ce:YAG - Neodymium, Cerium Co-doped Yttrium Aluminum Garnet

  • In double doped Nd:Ce:YAG crystals Cerium are chosen as sensitizer for Nd3+ ions because of its strong absorption in UV spectral region and efficient energy transfer to the Nd3+ excited state.
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IntroductionIn double doped Nd:Ce:YAG crystals, Cerium are chosen as sensitizer for Nd3+ ions because of its strong absorption in UV spectral region at flash lamp pumping and efficient energy transfer to the Nd3+ excited state. As a result - thermal distortion in Nd:Ce:YAG is appreciably less and the output laser energy is greater than that in Nd:YAG at the same pumping. Therefore it is possible or realize high power lasers with good beam quality. Lasing wavelength at 1064 nm, laser damage threshold and thermal conductivity of the Nd:Ce:YAG crystals are the same as for Nd:YAG.

 

Advantages of Nd:Ce:YAG Crystal

•   High efficiency
•   Low threshold
•   Good anti-violet radiation property
•   Good thermal stability
•   High optical quality

  

Table 1. Basic Properties

Laser Transition

4I3/24I11/2

Laser Wavelength

1.064 µm

Photon Energy

1.86 × 10-19 J @1.064 µm

Emission Linewidth

4.5 Å @1.064 µm

Emission Cross Section (Nd 1 at.%)

2.7~8.8 × 10-19 cm2

Fluorescence Lifetime (Nd 1 at.%)

230 µs

Refractive Index

1.8197 @1.064 µm

 

Table 2. Specifications

Dopant Concentration

Nd: 1.1~1.4 atm%, Ce: 0.05~0.1 atm%

Rod Sizes

Diameter: 3~6 mm, Length: 40~80 mm;

Upon request of customer

Dimensional Tolerances

Diameter: ±0.1mm 

Length: ±0.5 mm

Surface Quality (Scratch/Dig)

10/5 to MIL-PRF-13830B

Wavefront Distortion

λ/4 @633 nm

Flatness

 λ/8 @633 nm

Parallelism

≦ 30 arc sec

Perpendicularity

≦ 15 arc min

Chamfer

≦ 0.2 mm×45°

AR Coating

≦ 0.2% @1064 nm

 

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