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The crystals of Yttrium-Aluminum Garnet (YAG) doped with three-valence vanadium V3+ in tetrahedral position is relatively new material for passive Q-switching. V:YAG has working as efficient Q-switch for lasers operating in the 1.0~1.5 µm region. The absorption band between 1.0~1.5 µm is attributed to 3A2 →3T2 transition of V3+ ion in tetrahedral position of garnet lattice. Concentration of V3+ in tetrahedral position is controlled by growth and annealing conditions. The efficient Q-switching of lasers operating at both 1.064 and 1.3 micron has been obtained with a number of active mediums such as Nd:YAG, Nd:YVO4, Nd:KGd(WO4)2 under flash-lamp and laser diode pumping.
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Properties
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V3+:YAG
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Wavelength (nm)
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1000~1500
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Initial transmittance (%)
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15~95
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Initial absorption coefficient (cm-1)
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0.1~2.0
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Ground-state absorption cross-section (cm2)
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7.2 x 10-18@1.32 µm
3.0 x 10-18@1.06 µm |
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Optical length (mm)
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0.2~5
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Diameter (mm)
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5~10
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Orientation:
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The rod axis is along [111] within5°
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Aperture
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2x2 ~ 10x10 mm
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Length:
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0.1 ~ 12 mm
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Initial transmission:
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5% ~ 99%
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Angle tolerance:
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Δθ< ± 0.5°; Δφ< ±0.5°
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Flatness:
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λ /8 @ 633 nm
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Parallelism:
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20 arc sec
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Perpendicularity:
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5 arc minutes
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Surface finishing:
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20/10 scratch/dig to MIL-O-13830A
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Wavefront distortion:
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less than λ/8 @ 633 nm
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Coating
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AR/HR/PR coating upon customer’s request
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Custom precison optics-infrared optics-coatings. Professional and trustable manufacturer From Prototype to volume production
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