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Yb:CALGO - Ytterbium-doped Calcium Aluminum Gadolinium Oxide

FEE has been growing Yb:YAG 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 FEE material to have lower absorption and higher transmission than are commonly found on the market. FEE specializes in controlling the dopant level to optimize your pumping requirements. FEE's 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, FEE has become a world leader in providing 2D and 3D crystal designs. FEE also offers low absorbing, high damage threshold optical coatings. 

MATERIAL PARAMETERS

Host Crystal
CaGdAlO4
Structure Tetragonal, I4/mmm
Lattice Parameters
a = 3.66 A
c = 12.01 A
Thermal Expansion Coefficient α= 10.1 · 10-6 K-1
α= 16.2 · 10-6 K-1
Thermal Conductivity (2% Yb)
Wa = 6.9 Wm-1 K-1
Wc = 6.3 Wm-1 K-1
Melting Point
Approximately 1750 °C
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

Contact EOT About This Product


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