Neodymium-doped yttrium aluminium garnet laser crystal (Nd:YAG) provides the laser system designer with the most versatile solid state laser source in use today. With thousands of systems in daily use, Nd:YAG continues as the best of the rare earth garnet laser materials characterised by four level laser operation; permitting low threshold pulse or CW operation. Nd:YAG laser rods produce efficient laser output at 1.064 m. The systems designer can select from several levels of dopant concentration to optimise laser performance.
Dopant: 1 /-0.1 atm%
Crystal Orientation: <111>
Wavefront distortion: λ/8 per inch @ 633 nm
Extinction Ratio: >28dB
Dimension Tolerances: Diameter: 0.025 mm , Length: 0.5 mm
Surface quality: 10/5 Scratch / Dig
Parallelism: < 10 arc seconds
Perpendicularity: < 5 arc minutes
Clear Aperture: >90%
Flatness: < λ/10 @ 633 nm
Chamfer: <0.1 mm x 45˚
Barrel Finish: 50-80 micro-inch (RMS)
Anti-Reflection Coating: R < 0.20% @ 1064 nm per surface. Damage threshold over 1GW/cm2@ 1064nm, 10 ns and 10 Hz.
HR Coating: R>99.8% @ 1064nm and R<5% @ 808nm
