Agilent/Keysight 10471A

The Agilent/Keysight 10471A is a laser head designed as the optical source for laser interferometer positioning systems. It delivers stable, accurate laser output essential for precision metrology and dimensional measurement across demanding industrial and scientific applications. The unit combines exceptional wavelength stability with proven long-life tube technology, supporting measurement ranges up to 40 meters across all axes.

Technical Specifications

• Wavelength Stability: ±0.002 ppm (typical, vacuum, 1 hour); ±0.02 ppm (vacuum, lifetime)


• Wavelength Accuracy: ±0.1 ppm (vacuum, 3 sigma, lifetime); ±0.02 ppm with factory calibration to MIL-STD 45663


• Measurement Range: 40 meters (130 feet) sum of all axes


• Magnetic Field Strength: ≤5.25 milliGauss at 4.6 m (15 ft) from unit surface (non-operating)


• Heat Dissipation: 23 W (operating); 35 W (warm-up)


• Mean Time Between Failures: >50,000 hours (typical)


• Laser Classification: Class II per 21 CFR 1040.10 and 1040.11

Key Features

• Long-life proven laser tube architecture


• Exceptional wavelength stability supporting sub-ppm accuracy over extended periods


• Factory calibration to MIL-STD 45663 available


• Selectable beam diameter options: 3 mm (Option 003), 6 mm (standard), or 9 mm (Option 009)


• Low magnetic field emissions from integrated permanent magnets


• Compact thermal footprint with defined power dissipation profiles

Compatibility & Integration Cabling clearance requirements: 12 cm beyond unit back (5517A model); 10.16 cm beyond unit back (5517B/BL/C/CL/D/DL/EL/FL/GL models). 3-mm beam diameter (Option 003) integrates with Keysight 10719A and 10721A differential interferometers, plus 10737L/R compact three-axis systems. 9-mm beam diameter (Option 009) supports 10735A and 10736A three-axis interferometer platforms.