Neodymium Doped Gadolinium Ort

• Neodymium doped Gadolinium Orthovanadate (Nd:GdVO4) is an excellent laser crystal. This crystal is ideal laser host material for the DPSS (Diode pumped Solid State) micro/mini lasers because of its good physical, optical and mechanical properties. It has higher slope efficiency than Nd:YAG and better thermal conductivity, higher power output than Nd:YVO4, therefore, it is a good choice to use Nd:GdVO4 for high power output DPSS lasers. • Basic Properties • Crystal Structure Tetragona • Space Group I41/amd • Lattice Parameter a=0.721nm, b=0.635nm • Lasing Transition 4F3/2 → 4I11/2/. • Lasing Wavelength 1062.9nm • Emission Cross Section (at 1064nm) 7.6x10-19 cm2 • Absorption Cross Section (at 808nm) 4.9x10-19 cm2 • Absorption Coefficient (at 808nm) 74cm-1 • Index of Refractivity (at 1064nm) n0=1.972, ne=2.192 • Thermal Conductivity (<110>) 11.7W/(mxK) • Density 5.47g/cm3 • Nd Dopant Level (atomic) 0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%... • Specification: • 1)Orientation: a-cut crystalline direction(+/-0.20) • 2) Dimensional tolerance: +/-0.1mm(typical)High precision +/-0.005mm can be available upon request. • 3)Wavefront Distortion: • 4) Surface quality: better than 20/10 Scratch/Dig per MIL-O-1380A • 5) Parallelism: < 10 arc seconds • 6) Perpendicularity: < 5 arc minutes • 7) Surface flatness: • 8) Clear aperture: Central 95% • 9) Chamfer: 0.15x450 • 10) Damage threshold: over 15J/cm2 (rods without coating) over 700 MW/cm2 (coated) • 11)Coating: *m, R< 0.1%*, T>95 *m, R>99.8%*, T>95%*nm, R<0.1%

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