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Yb:YAG crystals Ytterbium Doped Yttrium Aluminum Garnet

YbYAG crystal is more suitable for diode-pumping than the traditional Nd-doped systems. It can be pumped at 0.94 μm laser output. Compared with the commonly used Nd:YAG crystal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-state lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.

  • Product Origin:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

    3-4weeks
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  • Product Detail

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 5/22 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.

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