Burleigh WA-110 FFT Laser Spectrum Analyzer

The Burleigh WA-1100 Wavemeter delivers precise wavelength measurement for continuous wave (CW) laser sources using a scanning Michelson interferometer architecture. The instrument counts interference fringes from both the input laser and an internal multi-mode HeNe reference laser, deriving wavelength from the fringe count ratio. This approach eliminates the need for external wavelength standards while maintaining absolute accuracy of ± 500 MHz or ±1 ppm.

Automatic air refractive index correction via integrated temperature and pressure sensors ensures measurement validity across environmental conditions. Results display in nm, cm⁻¹, or GHz. The microprocessor-based design supports measurement averaging up to 128 acquisitions and includes a monitor port for direct access to fringe and timing signals.

## Technical Specifications

• **Measurement Method:** Scanning Michelson interferometer with fringe counting
• **Reference Laser:** Multi-mode HeNe, ± 500 MHz or ±1 ppm absolute accuracy
• **Output Units:** nm, cm⁻¹, GHz
• **Measurement Averaging:** Up to 128 measurements
• **Environmental Correction:** Automatic air refractive index compensation via temperature and pressure sensors
• **Power Input:** 90–260 VAC, 50/60 Hz

## Key Features

• Fringe counting eliminates external calibration requirements
• Automatic environmental correction for field deployment
• Remote control via RS-232 or GPIB (IEEE-488)
• SCPI protocol support for integrated instrument control
• Bi-directional serial communication
• Monitor port for signal diagnostics

## Typical Applications

• CW laser wavelength verification and documentation
• Reference laser calibration and traceability
• Tunable laser characterization across tuning ranges
• Spectroscopy and metrology workflows requiring traceable measurements

## Compatibility & Integration

RS-232 and GPIB interfaces enable integration into automated test systems. SCPI command set supports standard instrument programming across heterogeneous benchtop and ATE environments. Monitor port provides oscilloscope-compatible fringe and timing signals for system diagnostics.