Descriptions:
Yb:YAG crystals (Ytterbium
Doped Yttrium Aluminum Garnet) is
more suitable for diode-pumping than the traditional Nd-doped systems. It is expected to replace Nd:YAG crystal for high power diode-pumped
lasers and other potential applications.
Optical and
spectral properties of YbYAG
|
Laser Transition
|
2 F 5/2→2 F 7/2
|
|
Laser Wavelength
|
1030nm
|
|
Photon Energy
|
1.93×10-19 J(@1030nm)
|
|
Emission Linewidth
|
9nm
|
|
Emission Cross Section
|
2.0×10-20 cm2
|
|
Fluorescence Lifetime
|
1.2ms
|
|
Diode Pump Band
|
940nm or 970nm
|
|
Pump Absorption Band Width
|
8nm
|
|
Index of Refraction
|
1.82
|
|
Thermal Optical Coefficient
|
9×10-6/℃
|
|
Loss Coefficient
|
0.003 cm-1
|
HGO offers YbYAG
specifications:
|
Doping(atm%):
|
1.0% ~ 20%
|
|
Orientation:
|
<111> crystalline direction
|
|
Wavefront Distortion:
|
λ/10 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:
|
< 5′
|
|
Clear Aperture:
|
> 90%
|
|
Surface Flatness:
|
< λ/10 @ 632.8 nm
|
|
Chamfer:
|
< 0.1 mm @ 45o
|
|
Barrel Finish
|
50-80 micro-inch (RMS) ,
|
|
Size
|
Upon customer request
|
|
Coating
|
AR/HR/PR coating upon customer’s request
|
|
Damage Threshold
|
750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
|
|
Quality Warranty Period
|
One
year under proper use
|
Slabs,
thread rod, Er:YAG, Nd:YAG, Cr:YAG, Ce:YAG, Tm:YAG, Ho:YAG and other ion doped
YAG crystals are also available upon request.
Advantages:
1) Very low fractional heating, less than 11%
2)
Very high slope efficiency
3)
Broad absorption bands, about 8nm@940nm
4)
No excited-state absorption or up-conversion
5)
Conveniently pumped by reliable InGaAs diodes at
940nm(or 970nm)
6)
High thermal conductivity and large mechanical
strength
7)
High optical quality
Why
Choose HGO ?
HG
OPTRONICS.,INC. supplies very high quality of Ytterbium Doped Yttrium Aluminum Garnet Yb:YAG crystals. The use of high quality
starting materials for crystal growth, whole boule interferometry, and precise
measurement of Yb concentration using transmission spectroscopy and
fluorescence lifetime measurements, assures that each crystal will perform to customer
specifications.
We supply YbYAG in various
formation,slabs,rods, discs, Brewster cut ,convex and concave. And base on our diffusion
bonding technology various YbYAG-based configurations are availabl to
supply, especially in the form of Yb:YAG/Cr4+:YAG or YbYAG/YAG diffusion
bonding.
