Yttrium Aluminum Garnet Crystal
| Product | Yttrium Aluminum Garnet (YAG) Crystal |
| Part Number | SB20 |
About Yttrium Aluminum Garnet (YAG) Crystal
Yttrium aluminum garnet (YAG) crystal is cubic, isotropic and has excellent optical and thermodynamic properties. Its mechanical properties and chemical stability are close to sapphire crystal, but there is no birefringence effect of sapphire crystal. Pure YAG crystal has high transmittance in the region of 0.25- 5 µm and no absorption in the region of 2-3 µm, while glass has a strong H2O absorption band in this region. Therefore, undoped pure YAG crystal is a new substrate and window material for ultraviolet and infrared optical equipments. At the same time, the excellent physicochemical and optical properties of YAG crystal make it an important optical crystal material in high temperature and high energy physical environment.
Advantages of YAG:
- Transmission in 0.25-5.0 µm, no absorption in 2-3 µm
- High thermal conductivity, 10 times better than glasses
- Extremely hard and durable
- Non-birefringence
- Stable mechanical and chemical properties
- High bulk damage threshold
- High index of refraction, facilitating low aberration lens design
NCE can provide pure undoped Yttrium aluminum garnet (YAG) crystal, as well as slabs, thread rods, Er:YAG, Yb:YAG, Cr:YAG, Ce:YAG, Tm:YAG, Ho:YAG, and other ion doped YAG-based crystals upon request. In addition, we can also provide other types of window crystals like CaF, MgF2 crystals, etc. Please contact us for more details. Get a Quote Now! For other optical materials, please check our Optical Materials category page.
Other Trade Name: YAG window crystal, pure YAG crystal, undoped YAG crystal
Typical Applications of YAG:
Pure YAG Yttrium Aluminum Garnet is a new substrate and window material that can be used for both UV and IR optics. It is particularly useful for high-temperature and high-energy applications.
Typical Specification – Yttrium Aluminum Garnet (YAG) Crystal
| Orientation: | <111> |
| Surface | Ground (grinding) or polished |
| Wavefront Distortion: | λ/4 per inch @ 632.8 nm |
| Dimension Tolerances： | ±0.1 mm |
| Surface Quality: | 10/5 Scratch/Dig MIL-O-1380A |
| Parallelism: | < 10” |
| Perpendicularity: | < 10’ |
| Clear Aperture: | > 90% |
| Surface Flatness: | < λ/8 @ 632.8 nm |
| Chamfer: | < 0.1 mm @ 45 deg. |
| Size | Upon customer request |
Order Information
Inquiries and orders should include the following information:
- Quantity
- Dimensions
- Crystal orientation
- Polished or ground finish
Packing and Storage
Standard Packing: 100 pcs in clean sealed bags. Special package is available on request.
Typical Properties of YAG crystal
| Chemical Formula | Y3Al5O12 |
| Crystal Structure | Cubic |
| Lattice Parameters | 12.01 Å |
| Melting Point: | 1950°C |
| Density | 4.56 g/cm3 |
| Mohs Hardness | 8.5 |
| Modulus of Elasticity | 310 GPa |
| Tensile Strength | 0.13~0.26 GPa |
| Thermal Expansion Coefficient | 7.8×10-6/°C <111> |
| Thermal Conductivity | 14 W/(m·K) |
| Thermal Optical Coefficient (dn/dT) | 7.3×10-6/°C |
| Thermal Shock Resistance | 790 W/m |
