The Burleigh WA-2500 VIS/NIR/IR Wavemeter is a precision instrument for accurate wavelength measurement of continuous-wave laser sources across the visible, near-infrared, and infrared spectral regions. Built around a compact scanning Michelson interferometer and high-resolution Moiré gauge, it delivers ±1 part in 10,000 accuracy with interchangeable detectors for broad spectral coverage. The wavemeter measures tunable lasers including dye, Ti:Sapphire, and diode lasers with coherence lengths down to 150 GHz linewidth and extends to 3000 GHz with Auto-Resolution adjustment.
Technical Specifications
• Wavelength Range: 400 nm to 1800 nm
• Accuracy: ±1 part in 10,000 (0.1 nm or 1 cm⁻¹ at 1000 nm)
• Display Resolution: 0.01 nm (0.1 cm⁻¹)
• VIS Detector: 400 nm to 1100 nm
• IR Detector: 600 nm to 1800 nm
• Laser Linewidth Measurement: 150 GHz (5 cm⁻¹) at specified accuracy; Auto-Resolution up to 3000 GHz
• Minimum Input Power: 20 µW
• Maximum Incident Power: 100 mW on beam receiver (2.5 mm aperture); power density adjustment required for smaller beams
• AC Power Input: 100/115/230 V AC
– Key Features
• Normal measurement mode updates every 0.2 seconds; Average mode accumulates 10 sequential measurements with 2-second display updates
• Six-digit LED display with selectable units (nm or cm⁻¹) in vacuum or air
• Bar-graph intensity meter for fringe signal monitoring and alignment
• Signal condition indicators: “LO SIG” or “HI SIG” warnings
• “COH Er” display flag indicates linewidth exceeding 3000 GHz
• On-board calibration function
• Beam receiver with 2.5 mm coupling head aperture and 3-meter patch cord cable
– Typical Applications
• Tunable laser wavelength verification and characterization
• Dye laser output measurement
• Ti:Sapphire laser wavelength determination
• Diode laser spectral monitoring
– Compatibility & Integration
• RS-232 interface at 2400 Baud
• Three BNC diagnostic outputs: MONITOR, WINDOW, and TRIGGER
• Physical dimensions: 24 × 16 × 12 inches; Weight: 25 lbs
