Descriptions:
Pure YAG Yttrium Aluminum Garnet crystal is a new substrate and window material that can be used for both UV and IR optics. It isparticularly useful for high-temperature and high-energy applications.
Main Applications:
1)
Laser igniters
2)
Laser-induced breakdown spectroscopy
3)
Optical substrates and windos
4)
Particle image velocimetry
5)
Cavity ring-down spectroscopy
6)
Transparent electronic substrates
7)
Right angle prism
Advantages:
1)
Transmission in 0.25-5.0mm, no absorption in 2-3mm
2)
High thermal conductivity, 10 times better than glasses
3)
Extremely hard and durable
4)
Non-birefringence
5)
Stable mechanical and chemical properties
6)
High bulk damage threshold
7)
High index of refraction, facilitating low aberration
lens design
Basic
properties:
|
Chemical Formula
|
Y3Al5O12
|
|
Crystal Structure
|
Cubic
|
|
Lattice Parameters
|
12.01 Å
|
|
Melting Point:
|
1950 °C
|
|
Density, g/cm3
|
4.56
|
|
Mohs Hardness
|
8.5
|
|
Modulus of Elasticity
|
310GPa
|
|
Tensile Strength
|
0.13~0.26GPa
|
|
Thermal Expansion Coefficient
|
7.8 x 10-6/ ℃ <111>
|
|
Thermal Conductivity
|
14W/m/K
|
|
Thermal Optical Coefficient (dn/dT)
|
7.3 × 10-6/ ℃
|
|
Thermal Shock Resistance
|
790W/m
|
HGO offers YAG specifications:
|
Orientation:
|
<111> crystalline direction
|
|
Wavefront Distortion:
|
λ/4 per inch @ 632.8 nm
|
|
Dimension Tolerances：
|
rods with diameter: +0.0/-0.05 mm , Length: ±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 @ 45deg.
|
|
Size
|
Upon customer request
|
|
Coating
|
Uncoated or AR upon customer’s request
|
|
Quality Warranty Period
|
One year
under proper use
|
Slabs, thread
rod, Er:YAG, Yb:YAG,Cr:YAG, Ce:YAG, Tm:YAG, Ho:YAG and other ion doped
YAG-based crystals are also available upon request.
Why
Choose HGO ?
HG
OPTRONICS.,INC. supplies high purity yttrium aluminum garnet YAG
crystals. Based on over 13 years’processing experiences and advanced
processing techniques, high quality YAG windows or prism with high precision is
achievable. In addition, we can also produce other types of window
crystals like MgF2 crystals, BaF2,LiF Crystals, etc.
YAG crystals also work as a perfect
endcap for different ions doped YAG based laser crystals. HGO has advanced diffusion
bonding technology and various YAG and ions doped diffusion bonding crystals
are available from stock or upon request.
