AdvatechUK

Ytterbium:YAG (Yb:YAG) lases at 1030nm. With pumping wavelengths at 940 and 970nm Yb:YAG is very well suited to diode-pumping (e.g InGaAs). Compared with Nd:YAG, Yb:YAG has a much larger absorption bandwidth which leads to reduced thermal management issues.









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Yb:YAG Laser Rods


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Laser / Optical Properties

Units

Value

Laser Wavelength Peak

nm

1030

Emission Linewidth

nm

9

Absorption Band(s)

nm

940, 970

Absorption Bandwidth

nm

8

Emission Cross-section

10‾²º cm²

2

Fluorescent Lifetime

ms

1.2

Loss @ Lasing Wavelength

cm‾¹

<0.003

Refractive Index (nD) @ 589 nm



Refractive Index (n) @ 632 nm


1.83

Thermal Optical Coeff. (dn/dT)

10‾⁶/ºC

90

Yb:YAG Laser - Availability


Physical / Thermal Properties

Units

Value

Chemical Formula


 YAlO₁₂:Yb

Melting Point

ºC

1970

Thermal Expansion Coeff. (0~250ºC)

 10‾/ºC

82

Thermal Conductivity (@ 20ºC)

W/m. ºK

14.0 (@20C)

Specific Heat

 J/g K

0.59

Chemical Durability (@100ºC weigh loss rate distilled water)   

μg/hr.cm²

52

Density  

g/cm³

4.56

Mohs Hardness


8.5

Damage Threshold (1ns)

J/cm³


Yb:YAG Laser Rod Properties