Yb:YAG Crystal

Short Description:

Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG) is more suitable for diode-pumping than the traditional Nd-doped laser crystal. Features of Yb:YAG produced by WISOPTIC:
       •  High slope efficiency
       •  Broad absorption bands (about 8 nm @ 940 nm)
       •  No excited-state absorption or up-conversion
       •  Easily pumped by reliable InGaAs diodes at 940 nm (or 970 nm)
•  Low fractional heating (less than 11%)
       •  High thermal conductivity
•  Good mechanical strength
       •  High internal optical quality

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Product Detail

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Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG) is more suitable for diode-pumping than the traditional Nd-doped laser crystal. Compared with the commonly used Nd:YAG, Yb:YAG has the following advantages: three to four times lower thermal loading per unit pump power and much larger absorption bandwidth to reduce thermal management requirements for diode lasers, longer upper-laser level lifetime. Yb:YAG lasing at 1030 nm is a good substitute for Nd: YAG lasing at 1064 nm and its SHG at 515 nm may replace the bulky Ar-ion laser which emits at 514 nm.

Main Specifications
Dimensions	Length	5 ~ 150 mm (± 0.5 mm)
	Diameter	2 ~ 20 mm (+0.00, -0.05 mm)
Yb Concentration	0.5 ~ 25 atm%
Orientation	[100] or [111] (± 1°)
Distinction Ratio	≥ 28 dB
Wavefront Distortion	λ/8 per inch @ 1064 nm
Barrel Finish	Fine ground (400#)
End Surface Parallelism	≤ 10”
Perpendicularity	≤ 5’
End Surface Flatness	λ/10 @ 633 nm
End Surface Quality	10-5 [s-d] (MIL-PRF-13830B)
Chamfer	0.15 ± 0.05 mm @ 45°
Coating	AR (R<0.25% @ 1030 nm)
Single Pass Loss	< 3×10^-3 cm^-1