Yb：YAG

YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional

Classification:

Detailed introduction

Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems.Compared with the company used Nd:YAG crystal,Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers,a longer upper-laser level lifetime,three to four times lower thermal loading per unit pump power.

PRODUCT FEATURE

Very high slope deficiency

High optical quality

High thermal conductivity,High compressive strength

No excited-state absorption or up-conversion

Very low fractional heating,less than Nd:YAG

Broad absorption bands,about 8nm 940nm

Conveniently pumped by reliable in GaAs diodes( 940nm or 970nm)

Specifications
Concentration	0.5at%~25at%
Dimensions	Diameter:2mm~20mm, Length:5~150mm(Customized available)
Dimensions Tolerance	Φ:+0/-0.04mm,L:+0.5/-0mm
Perpendicularity	≤5′
Parallelism	≤10″
Clear Aperture	≥95%
Surface Quality	10/5(MIL-PRF-13830B)
Barrel	Fine Ground, Polishing, Grooving
Flatness	≤λ/10@632.8nm
Wavefront Distortion	≤1/8λ per inch@632.8nm
Extinction Ratio	≥28dB
Coating	AR coating:R<0.15%@1030nm
Damage Threshold	≥1GW/cm²@1064nm,10ns,10Hz

Optical Properties
Laser Transition	²F_5/2→ ²F_7/2
Wavelength	1030nm
Photon Energy	1.93×10-19J@1030nm
Emission Line-width	9nm
Fluorescence Lifetime	1.2ms
Absorption Wavelength of Diode Pumped	940nm,970nm
Pump Absorption Bandwidth	8nm

Physical and Chemical Properties
Crystal Structure	Tetragonal
Melting Point	1970°C
Density	4.56±0.04g/cm³
Specific Heat	0.59J/g.cm³@0~20°C
Elastic Modulus	310GPa
Young's Modulus	3.17×104Kg/mm2
Mohs Hardness	8.5
Poisson’s Ratio	0.3
Tensile Strength	0.13~0.26GPa
Thermal Expansion Coefficients	<100>:8.2×10^-6/K@0~250°C
	<110>:7.7×10^-6/K@0~250°C
	<111>:7.8×10^-6/K@0~250°C
Thermal Conductivity	14W/m/K@20°C
Thermal Conductivity	10.5W/m/K@100°C
Thermal Optical Coefficient	7.3×10^-6/K
Index of Refraction	1.82@1030nm