The Newport 560B Laser Diode Driver is a precision current source for laser diode applications requiring stable, accurate output and flexible control modes. It delivers up to 6 A of laser current with dual operating modes—constant current and constant laser power—enabling both fixed-bias and power-regulated configurations. The driver incorporates redundant FET and relay protection circuits, independent current limiting, and output delay compliance with CDRH regulations. Front-panel operation combines with external analog modulation capability for dynamic control of laser output.
Technical Specifications
Laser Current
• Maximum Output: 6 A
• Output Range: 0–6 A
• Resolution: 0.06 mA
• 1-Hour Stability: < 20 ppm FS
• 24-Hour Stability: < 50 ppm FS
• Output Noise/Ripple (low bandwidth): < 7.3 µA
• Output Noise/Ripple (high bandwidth): < 10.9 µA
Laser Characteristics
• Compliance Voltage: 5 V
• Temperature Coefficient: < 50 ppm FS/°C
Modulation & Control
• Operating Modes: Constant Current, Constant Laser Power
• External Modulation Bandwidth (low): DC to 10 kHz
• External Modulation Bandwidth (high): DC to 300 kHz
• Transfer Function: 300 mA/V
• Analog Input Impedance: 10 kΩ
• Analog Input Range: −10 V to +10 V
• Internal modulation: sine or square wave available
Photodiode Monitoring
• Monitor Current Range: 0–50 mA
• Monitor Current Accuracy: ±0.05
• Monitor Current 24-Hour Stability: 10 µA
• Photodiode Current Range: 0–50.00 mA
• Photodiode Current Accuracy: ±0.05
• Photodiode Biasing: 0 V to +5 V reverse bias
• Monitor Photodiode Bias: 5 V reverse bias
– Key Features
• Redundant FET and relay shorting circuits protect the laser diode
• Independent current limit setting with output keyswitch control
• Interlock and output delay for safety compliance
• USB connectivity with LabView driver support
• Operating Temperature Range: 0–40°C
• Storage Temperature Range: −40°C to +70°C
• Dual AC input: 100–120 VAC or 200–240 VAC
– Typical Applications
Precision laser diode biasing, modulated laser control, wavelength-stabilized laser systems, and photodiode-feedback power regulation.
– Compatibility & Integration
USB interface with LabView driver support enables computer control and automated test integration.
