ThorLabs SA200-12A – 1250 – 1400 nm, Scanning Fabry-Perot Interferometer
The ThorLabs SA200-12A is a scanning Fabry-Perot interferometer designed for high-resolution spectral analysis in the 1250-1400 nm range. It features a precision scanning mechanism and high-finesse optics, making it ideal for characterizing narrow-linewidth lasers and analyzing spectral properties of light sources in telecommunications and research applications.
- Model
- ThorLabs SA200-12A
- Calibration
- Available on request
- Price
- $539
- Status
- In stock
- RFQ ref
- SA200-12A
This unit
The Thorlabs SA200-12A is a scanning Fabry-Perot interferometer engineered for high-resolution spectral analysis in the 1250–1400 nm infrared band. It employs a confocal cavity with high-reflectivity mirrors and a piezoelectric transducer to vary mirror separation, functioning as a tunable narrow band-pass filter for examining fine spectral structures of continuous-wave lasers. The cavity is constructed from low thermal expansion Invar® material and housed in black anodized aluminum, ensuring thermal stability across extended measurement sessions.
Technical Specifications
- Wavelength Range: 1250–1400 nm
- Free Spectral Range (FSR): 1.5 GHz
- Minimum Finesse: >200
- Resolution: 7.5 MHz
- Cavity Configuration: Confocal with Invar® construction
- Mirror Coatings: High-reflectivity (HR) on inner surfaces; anti-reflection (AR) on outer surfaces
- Maximum PZT Input Voltage: 150 V
- Flange Diameter: Ø 2"
- Total Length: 5.85"
- Apparent Beam Size: Approximately 4 mm
- Outer Housing: Black anodized aluminum
Key Features
- Lever-actuated iris diaphragms at entrance and exit for alignment and beam control
- Piezoelectric transducer enables continuous wavelength scanning with sub-GHz resolution
- Compact kinematic-mount compatible design (Ø2" flange)
- Low thermal drift from Invar® cavity material
Typical Applications
- Spectral characterization of CW lasers in the 1250–1400 nm band
- Fine-structure analysis of narrowband optical sources
- Wavelength verification and tuning of infrared laser systems
Compatibility & Integration The SA200-12A operates with the Thorlabs SA201B controller, which supplies the scanning voltage ramp (0–20 V) and enables offset and zoom control (1X to 100X resolution magnification). Signal input accepts triangle or sawtooth waveforms at 5–50 Hz frequency with 15–40 V amplitude. Spectral data is output via SMA or BNC connector to an oscilloscope or amplifier; a 5 kΩ terminator is recommended when direct detector connection is used. Mounting in a compatible kinematic mirror mount (such as Thorlabs KM200) is recommended.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 5 to 50 Hz (scan signal frequency) | Voltage / Current Range: 0–20 V (controller output) |
| maximum 150 V (PZT input) | Wavelength Range | 1250–1400 nm |
Frequently Asked Questions
- What does the ThorLabs SA200-12A measure, and what wavelength range does it cover?
- The SA200-12A is a scanning Fabry-Perot interferometer that performs high-resolution spectral analysis across the 1250–1400 nm band, making it well-suited for telecommunications and research applications. It measures narrow-linewidth laser characteristics and spectral properties by using a precision scanning mechanism with a scan signal frequency of 5 to 50 Hz. The instrument's high-finesse optics deliver the wavelength discrimination needed to resolve fine spectral features in infrared sources.
- What condition is this used SA200-12A in, and what was checked before listing?
- This unit is offered in used condition and has been functionally verified for core operation. We perform baseline acceptance testing on all optical instruments to confirm scanning capability and optical alignment before offering them for sale. A full calibration certificate is available separately if traceable documentation is required for your application.
- Is calibration available for the SA200-12A, and what does it cost?
- Yes, calibration services are available separately starting at $450. Our calibration covers wavelength accuracy and scanning linearity over the 1250–1400 nm range and is performed to ensure the SA200-12A meets original manufacturer specifications. Contact our sales team for current turnaround time and specific scope of work.
- What interfaces and control options does the SA200-12A support?
- The SA200-12A controller outputs 0–20 V directly and supports a maximum PZT input of 150 V for piezoelectric scanning drive. The instrument is designed for integration with compatible optical test benches and spectrum analysis software via its scanning control interface. Consult the original ThorLabs documentation or contact us for details on software compatibility and any required adapter cables for your measurement system.
ThorLabs SA200-12A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the ThorLabs SA200-12A. 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 ThorLabs SA200-12A 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.
ThorLabs SA200-12A price
This ThorLabs SA200-12A is listed at $539. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
ThorLabs SA200-12A calibration cost
NIST-traceable calibration for the ThorLabs SA200-12A 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 →
