The Keysight 5501B laser head, used in Keysight interferometer systems, offers a vacuum wavelength accuracy (3 &sigma, lifetime) of 0.1 ppm, and a standard beam diameter of 6 mm. The laser head uses a proven long-life laser tube and includes a reference receiver and high voltage power supply. The 5501B is a drop-in replacement for the Keysight 5501A laser head. The 5517 family of laser heads should be considered for new applications.
The Keysight 5501B is configured with appropriate optics and system electronics to build a laser interferometer system that meets the unique physical layout and measurement requirements of individual applications. The custom positioning system improves product quality, increases yields, and facilitates manufacture of precision products.
Weight: 3.4 Kg (7.5 pounds)
Magnetic field strength (Non-Operating): Does not exceed 5.25 milligauss at a distance of 4.6 m (15 ft) from any point on the surface of the packaged Laser Head.
Clearance required for cabling: 10.16 cm (4 in) beyond back
Power Input Requirements: +15 V ±0.3 V at 0.79 A maximum =15 V ±0.3 V at 0.67 A maximum
Heat Dissipation: 23 W during operation, 35 W during warmup
Beam power output: 1 milliwatt maximum, 180 microwatts minimum