ND:YAG
Description: Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replace..
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ND:YAG
Description:
Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replaces yttrium in the crystal structure of the yttrium aluminum garnet (YAG), since they are of similar size. Generally the crystalline host is doped with around 1% neodymium by atomic percent.
Advantages Of Nd:YAG：:
• High gain;
• Low threshold;
• High efficiency;
• Low loss at 1064nm;
• Good thermal conductivity and thermal shock characteristics;
• Mechanical strength;
• Low threshold;
• High efficiency;
• Low loss at 1064nm;
• Good thermal conductivity and thermal shock characteristics;
• Mechanical strength;
• High optical quality;
• Material characteristics that allow for various modes of operation (CW, pulsed, Q-switched, mode locked).
Applications:
l Nd:YAG can produce blue laser with the frequency-doubling of 946nm;
l Nd:YAG can be operated in a very high power laser up to kw level at 1064nm;
l Nd:YAG can be Q-switched with Cr4+YAG directly;
l Nd:YAG can be used for high power green laser for SHG@1064nm.
Optical Properties:
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Chemical Formula
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Y3Al5O12
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Crystal Structure
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Cubic
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Lattice Constant
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12.01Å
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Melting Point
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1970°C
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Density
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4.5g/cm3
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Reflective Index
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1.82
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Thermal Expansion Coefficient
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7.8x10-6 /K<111>,0-250 ℃
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Thermal Conductivity
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14W/m/K, 20°C
10.5W/m/K, 100°C |
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Mohs hardness
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8.5
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Stimulated Emission Cross Section
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2.8x10-19 cm-2
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Loss Coefficient
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0.003 cm-1 @ 1064nm
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Linewidth
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0.6 nm
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Radiative Lifetime
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550 μs
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Specifications:
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Doping (atm%)
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0.3~2.0(±0.1)atm%
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Dimension / Thickness tolerance
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±0.05mm for dimension tolerance,±0.5mmfor thickness tolerance
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Wavefront distortion
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λ/8 per inch @ 633 nm
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Extinction Ratio
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>28dB
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Dimension Tolerances
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Dia.: +/-0.05 mm, Length: +/-0.5 mm
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Surface quality
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10/5 Scratch / Digper MIL-O-1380A
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Parallelism
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< 10 arc seconds
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Perpendicularity
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< 5 arc minutes
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Clear Aperture
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>90%
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Flatness
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<λ/10 @ 633 nm
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Chamfer
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<0.1 mm @ 45deg
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Barrel Finish
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50-80 micro-inch (RMS) ,
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Anti-Reflection Coating
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R < 0.25% @ 1064 nm per surface. Damage threshold over >500MW/cm2 @ 1064nm, 10 ns and 10 HZ
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High-Reflection Coating
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• Standard HR coating with R>99.8% @ 1064nm and R<5% @ 808nm
• Other HR coatings, such as HR @1064/532 nm, HR @946 nm, HR @1319 nm and other wavelengths are also available; |
Note: Other specifications of Nd:YAG crystals and coatings are also available upon request.