YAG (Yttrium Aluminum Garnet) Laser Transparent Ceramic
Keywords:
Scintillation Crystals
- Product Introduction
- Key advantages
- Application areas
- Product Features
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- Commodity name: YAG (Yttrium Aluminum Garnet) Laser Transparent Ceramic
YAG (Yttrium Aluminum Garnet) transparent ceramics are a typical class of oxide-based transparent ceramic materials, renowned for their high mechanical strength, excellent chemical and physical stability, exceptional hardness, robustness, high melting point, and outstanding transmittance across the visible to mid-infrared spectrum.
Product Introduction
YAG (Yttrium Aluminum Garnet) transparent ceramics are a typical class of oxide-based transparent ceramic materials, renowned for their high mechanical strength, excellent chemical and physical stability, exceptional hardness, robustness, high melting point, and outstanding transmittance across the visible to mid-infrared spectrum. Additionally, these ceramics exhibit superior physical and chemical stability. Compared to single-crystal YAG grown via the Czochralski method, vacuum-sintered YAG laser ceramics are not only more cost-effective but also better suited for large-scale production. As a result, YAG laser ceramics have already found extensive applications in solid-state lasers, missile domes, infrared windows, and even transparent armor systems.
Key Advantages
- Simple preparation process
- Enables large-scale fabrication and high-concentration doping
- Low cost
- Capable of fabricating multi-layered and multifunctional ceramic Structures
- Mass productionApplication Areas
- Solid-state laser
- Infrared window
- Transparent armored collar
- Missile domeProduct Features
Material Properties
Dielectric Constant
11.7 (1 kHz – 1 MHz)
Density
4.558 g/cm³
Hardness
8.5 GPa
Young's Modulus
261.7 GPa
Refractive Index
1.823
Transmittance
73% (wavelengths 180nm~6000nm)
Coefficient of Thermal Expansion
9.1–9.79 × 10⁻⁶ K⁻¹ (from room temperature to 1000°C)
Melting Point
1950°C
Product Processing Indicators
Effective Aperture
>90%
Dimensions
Customized to Customer Specifications
Diameter Tolerance
+0/-0.05 mm
Length Tolerance
±0.1 mm
Chamfer
≤0.3×45°
Surface finish
40-20 S-D
Flatness
≤λ/6 @632.8 nm
Parallelism
<20"
Perpendicularity
≤15′
Chipped Edge
<0.1 mm
Coating
Customized to Customer Specifications
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- Excellent transparency and infrared light transmittance
- Resistance to alkali metal vapor corrosion
- High melting point, high thermal conductivity
- Lower theoretical density, high insulation -
- Manufacturing infrared windows and fairings for spacecraft, rockets, and missiles,
- High-temperature furnace infrared windows, high-temperature infrared optical devices
- Optical filters and optical detectors
- Key materials for high-pressure sodium lamp tubes and infrared detector housings -
Material Properties Crystal structure Cubic Dielectric constant (1 kHz – 1 MHz) 9.65 Density 3.58g/cm3 Hardness 6.8 (Mohs) Optical transmission >90% @ (200–1000 nm) Lattice constant (Å) 4.130 Å Purity 99.95% Flexural Strength (MPa) 134MPa Refractive index 1.736 Coefficient of thermal expansion 11.2 × 10⁻⁶ (/°C) Thermal conductivity (W/m-K) 36 W/m-K at 300 K Melting point 2800°C Product Processing Metrics Effective Aperture >90% Dimensions Customized to customer specifications Diameter Tolerance +0 / -0.05 mm Length Tolerance ±0.1 mm Protective Chamfer ≤0.3 × 45° Surface finish 40-20 S-D Flatness ≤λ/6 @ 632.8 nm Parallelism <20" Verticality ≤15′ Chipped edge <0.1 mm Coating Customized to customer specifications
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