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Nd:Ce:YAG - Neodymium, Cerium Co-doped Yttrium Aluminum Garnet
Introduction
In 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.
CASTECH's laser crystal Nd:Ce:YAG is featured by
• High efficiency
• Low threshold
• Good anti-violet radiation property
• Good thermal stability
• High optical quality
|
Table 1. Basic Properties |
|
|
Laser Transition |
4I3/2→4I11/2 |
|
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 at.%, Ce: 0.05~0.1 at.% |
|
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 |
Products
-
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.
-
Introduction
In 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.
CASTECH's laser crystal Nd:Ce:YAG is featured by
• High efficiency
• Low threshold
• Good anti-violet radiation property
• Good thermal stability
• High optical quality
|
Table 1. Basic Properties |
|
|
Laser Transition |
4I3/2→4I11/2 |
|
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 at.%, Ce: 0.05~0.1 at.% |
|
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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