HP 5501B Transducer Laser Head

The HP 5501B Laser Head, used in HP 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 HP 5501A Laser Head. The 5517 family of laser heads should be considered for new applications.

The HP 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.

[ Features ]

Helium-neon, continuous wave, two-frequency laser
Fast warm-up (typically four minutes)
Compact package adds configuration versatility
Industry-leading reliability

[ Specifications ]

Physical Characteristics
Weight: 3.4 Kilograms (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
Power Input Requirements:
	+15 Volts +/-0.3 Volts at 0.79 Amperes maximum
	=15 Volts +/- 0.3 Volts at 0.67 Amperes maximum

Heat Dissipation: 23 watts (during operation) 35 watts (during warmup)

Warmup Time: less than 10 minutes (4 minutes typical)



Laser Beam Characteristics
Maximum Beam Power Output: 1 milliwatt

Minimum Beam Power Output: 180 microwatts

Beam Diameter: 6 millimeters (0.25 inch) typical

Vacuum Wavelength Stability:
	0.002 ppm	typical 1 hour
	0.02 ppm	typical lifetime

Nominal Vacuum Wavelength: 632.991372 nanometers

Safety Classification:
	Class II Laser Product conforming to U.S. National Center for Devices and
	Radiological Health Regulations 21 CFR 1040.10 and 1040.11.



Outputs
Reference Frequency: 1.5 - 2.0 MHz

[ Ordering ]

HP 5501B Transducer Laser Head Opt 1BN Mil std 45662A calibration certification Opt 1BP Mil std 45662A calibration w/ test data Opt 910 One Additional Manual Opt AV4 User's manual Opt UK6 Commercial cal. certificate w/ test data Opt W30 3 Yr. Return Repair Service Opt W50 5 Year Return Repair Service

HP 10778A	Power Cable
HP 10778B	Power Cable
HP 10778C	Power Cable
HP 10794B	Laser Head Cable for 5507B electronics

The HP 5501B is used with the HP 5507B electronics (HP 5527B system).

[ Assistance ]

To help you make the right instrument choices

Local Sales Office

[ Related ]

Related product families available online:

Laser Heads