Burleigh SA-91 Interferometer
Burleigh SA-91 Interferometer,Enables accurate measurement of optical path differences and coherence length. Used for wavelength calibration and fiber dispersion analysis in fiber optic and laser systems. Durable for laboratory applications.
- Model
- Burleigh SA-91
- Calibration
- Available on request
- Price
- $6,479
- Status
- In stock
- RFQ ref
- SA-91
This unit
The Burleigh SA-91 is a high-finesse Fabry-Perot interferometer for precision spectral characterization of narrow-band lasers and optical sources. Built on confocal mirror geometry with thermally stable Invar construction, it delivers high spectral resolution across the visible through near-infrared spectrum. The instrument measures optical path differences, coherence length, laser linewidth, longitudinal mode structure, and frequency stability with exceptional accuracy.
Technical Specifications
- Cavity Design: Confocal mirror geometry
- Free Spectral Range: 2 GHz or 8 GHz
- Finesse: >200 for wavelengths 300 for wavelengths ≥1000 nm
- Minimum Resolvable Bandwidth: FSR/Finesse
- Wavelength Range: 450 nm to 1.8 µm (interchangeable mirror sets); UltraBand™ coverage exceeds 250 nm per set
- Mirror Reflectivity: 99.7% nominal
- Transmission: >10%
- Input Aperture: 1 mm
- PZT Scan Distance: 1.2 µm/1000 V
- PZT Non-Linearity: <1%
- Scan Non-Linearity: <0.1% (with RG-91 electronic compensation)
- Construction: Thermally stable Invar
Key Features
- Interchangeable mirror sets span 450 nm to 1.8 µm without requiring instrument redesign
- UltraBand™ wavelength coverage reduces number of mirror set changes needed during multi-wavelength experiments
- High finesse enables sub-nanometer resolution
- Four-axis alignment mount (SA-900) supports precise cavity positioning
- Integrated PZT scanning with low non-linearity and electronic linearization
Typical Applications
- Laser linewidth measurement
- Longitudinal mode structure analysis
- Frequency stability measurements
- Wavelength calibration
- Fiber dispersion analysis
- Optical path difference measurements
- Surface measurements
Compatibility & Integration The SA-91 operates within a modular system: the RG-91 Ramp Generator supplies piezoelectric scanning voltage with adjustable range, zero offset, and rate, plus non-linearity correction. The DA-100 Detector/Amplifier provides 0.1 V/mW to 1 V/µW sensitivity, 0.3–100 kHz bandwidth, and minimum detectable power of 1 nW (silicon, 633 nm) or 2 nW (germanium, 1.5 µm).
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 2 GHz or 8 GHz | Voltage / Current Range: 1.2 µm/1000 V (PZT scan) |
| 0 to ±6 V output (DA-100) | Wavelength Range | 450 nm to 1.8 µm |
Frequently Asked Questions
- What does the Burleigh SA-91 Interferometer measure?
- The SA-91 is designed to measure optical path differences and coherence length across a wavelength range of 450 nm to 1.8 µm, making it ideal for wavelength calibration and fiber dispersion analysis in fiber optic and laser systems. The instrument operates with selectable frequency ranges of 2 GHz or 8 GHz, enabling precise characterization of both single-mode and multi-mode fiber properties. Its PZT scan capability provides 1.2 µm travel with 1000 V control voltage, allowing detailed interferometric analysis in laboratory environments.
- What is the condition of this used Burleigh SA-91, and what has been verified?
- This SA-91 is offered in used condition and has been inspected by our technical team at Aumictech. We verify functionality of core optical and electronic subsystems, including the interferometer optics, PZT actuator response, and analog output paths. Calibration certification is available separately through our accredited service starting at $450 if you require traceable measurement accuracy documentation.
- What calibration services are available for the SA-91?
- We offer calibration services for the Burleigh SA-91 starting at $450, which can include wavelength reference verification and output linearity checks across the operating range. Calibration is performed separately from the instrument purchase and is recommended for applications requiring traceable measurement data or periodic compliance verification. Contact our sales team for current turnaround times and specific calibration scope options.
- What interfaces and software compatibility does the SA-91 support?
- The Burleigh SA-91 provides analog output via the DA-100 module with ±6 V output range for direct integration into measurement systems and data acquisition setups. Legacy Burleigh instruments of this generation typically support GPIB or RS-232 interfaces depending on configuration; we recommend verifying the specific revision with our team before purchase. Software drivers and control utilities may be available separately; contact Aumictech for documentation and compatibility guidance with your existing lab infrastructure.
Burleigh SA-91 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Burleigh SA-91. Calibration covers wavelength accuracy at 850, 1310, 1550, and 1625 nm, power level accuracy, resolution bandwidth (RBW) accuracy, and dynamic range verification. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Burleigh SA-91 faults: wavelength motor failure, internal light source dimming, detector sensitivity loss. Common repairs include wavelength motor servicing, internal broadband source replacement, and detector recalibration after extended use.
Burleigh SA-91 price
This Burleigh SA-91 is listed at $6,479. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Burleigh SA-91 calibration cost
NIST-traceable calibration for the Burleigh SA-91 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 wavelength accuracy at 850, 1310, 1550, and 1625 nm, power level accuracy, resolution bandwidth (RBW) accuracy, and dynamic range verification. Turnaround is 1 to 3 business days after receipt. See full calibration details →
