HP / Agilent 5501B Laser Head
HP / Agilent Optical Light Sources. Wavelength: 632.991 nm (vacuum wavelength: 632.991372 nm), Accuracy: ±0.1 ppm (3 sigma, Voltage: +15 V ±0.3 V at 0.79 A max.
- Model
- HP / Agilent 5501B
- Calibration
- Available on request
- Price
- $2,086
- Status
- In stock
- RFQ ref
- 5501B
This unit
The HP/Agilent 5501B is a two-frequency helium-neon laser head engineered for high-precision metrology and interferometry systems. This continuous-wave (CW) source delivers 180 µW to 1 mW of optical power at 632.991 nm with exceptional wavelength stability and accuracy. The 5501B automatically maintains frequency lock for reliable performance in demanding measurement applications requiring sub-ppm stability over extended operational lifetimes.
Technical Specifications
Optical Output- Wavelength: 632.991 nm (vacuum wavelength: 632.991372 nm)
- Beam power: 180 µW (minimum) to 1 mW (maximum)
- Beam diameter: 6 mm typical
- Wavelength accuracy: ±0.1 ppm (3 sigma, lifetime)
- Wavelength stability: ±0.002 ppm (1 hour typical); ±0.02 ppm (lifetime typical)
- Reference frequency: 1.55 MHz to 2.4 MHz (varies by unit configuration) Electrical Requirements
- Supply voltage: +15 V ±0.3 V at 0.79 A max; −15 V ±0.3 V at 0.67 A max
- Operating power: 23 W
- Warmup power: 35 W
- Laser tube anode: 1.2 kV to 12 kV DC Physical & Environmental
- Weight: 3.4 kg (7.5 lb)
- Warmup time: <10 minutes (5 minutes typical)
- Magnetic field (non-operating): <5.25 milligauss at 4.6 m distance
- Cabling clearance: 10.16 cm (4 in) recommended
Key Features
- Class II laser product (21 CFR 1040.10/1040.11 compliant)
- Two-frequency CW output for interferometric applications
- Automatic frequency stabilization
- Sub-0.002 ppm short-term stability
- Safety Class I electrical design with protective earth terminal
Typical Applications
- Laser interferometry and displacement measurement
- Precision positioning and calibration systems
- Advanced metrology instrumentation
- Applications demanding ppm-level wavelength accuracy
Compatibility & Integration The 5501B integrates into systems requiring dual-frequency laser sources with stable, locked optical output. Dual ±15 V supplies and thermal stabilization circuits are required. High voltage hazard present; service restricted to trained personnel.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 1.55 MHz to 2.4 MHz (reference frequency range) | Voltage / Current Range: '+15 V ±0.3 V @ 0.79 A max |
| −15 V ±0.3 V @ 0.67 A max | Wavelength Range | 632.991 nm |
HP / Agilent 5501B — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the HP / Agilent 5501B. Calibration covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common HP / Agilent 5501B faults: laser diode end-of-life (output below spec), fiber output connector damage, output instability. Common repairs include laser diode replacement when output falls below spec, fiber output connector repair, and thermal management service.
HP / Agilent 5501B price
This HP / Agilent 5501B is listed at $2,086. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
HP / Agilent 5501B calibration cost
NIST-traceable calibration for the HP / Agilent 5501B is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
