Yb:CALGO - Ytterbium-doped Calcium Aluminum Gadolinium Oxide
Electro-Optics Technology GmbH has been growing Yb:CALGO for over 10 years. During this time, material properties and qualities have improved to make it one of the best solutions on the market. You will find our material to have lower absorption and higher transmission than are commonly found on the market. EOT GmbH specializes in controlling the dopant level to optimize your pumping requirements. Our high quality Yb:CALGO is a highly effective laser medium for high power ultrafast lasers. It is widely used in laser processing applications.
With over 20 years of polishing and fabrication experiece, EOT GmbH has become a world leader in providing 2D and 3D crystal designs. We also offer low absorbing, high damage threshold optical coatings.
MATERIAL PARAMETERS
Host Crystal |
|
Structure | Tetragonal, I4/mmm |
Lattice Parameters |
c = 12.01 A |
Thermal Expansion Coefficient | αa = 10.1 · 10-6 K-1 αc = 16.2 · 10-6 K-1 |
Thermal Conductivity (2% Yb) |
Wc = 6.3 Wm-1 K-1 |
Melting Point |
|
Density | 5.94 g/cm³ |
Refractive Indices at 1043 nm | na = 1.916 nc = 1.94 |
LASER PARAMETERS
Dopant Concentrations for Yb | Up to 10%; 1% corresponds to 1.25 x 1020/cm3 |
Absorption Cross Section at 979 nm | 4.42 · 10-20 cm2 (for polarization along c-axis) 1.65 · 10-20 cm2 (for polarization along a-axis) |
Absorption Bandwidth | 4 nm |
Fluorescence Lifetime | 0.44 ms (for<5 at% Yb) |
Emission Cross Section (990 nm to 1040 nm) | 0.8 · 10-20 cm2 (for polarization along a-axis) |
Emission Bandwidth | 60 nm |
SPECIFICATIONS
Aperture | On request (up to 20 mm²) |
Length | 0.1 mm to 40 mm |
AR Coatings | Available upon request |
Yb:CALGO Data Sheet
FEATURES
- Shorter laser pulses due to broad emission spectrum
- Excellent thermal properties
- High gain
- Large tuning range
OPTIONS
- Slabs, disks, and rods available
- a- ad c-cut parts available
- Custom coatings available
APPLICATIONS
- Ultrafast Picosecond Lasers
- Amplifiers
- Industrial Micromachining
- Medical