The Newport 560 Laser Diode Driver is a precision current source engineered for controlled operation of laser diodes, delivering stable and accurate current output critical for consistent laser performance. The driver supplies up to 6 A output current with exceptional stability—better than 50 ppm FS over 24 hours and 20 ppm FS over 1 hour. It operates in constant current and constant laser power modes, with external modulation bandwidth extending to 300 kHz (low bandwidth: DC to 10 kHz). Current resolution reaches 0.06 mA at the laser output and 0.006 mA at the setpoint, while output noise remains below 7.3 µA in low-bandwidth operation.
Technical Specifications
• Laser current output: up to 6 A (3 A and 6 A versions available)
• Laser compliance voltage: 5 V
• Current output stability: <50 ppm FS (24-hour); <20 ppm FS (1-hour)
• Temperature coefficient: <50 ppm FS/°C
• Laser current resolution: 0.06 mA
• Current setpoint resolution: 0.006 mA
• Current limit range: 0 to full range (±1% full-range accuracy)
• Laser output noise/ripple: <7.3 µA (low bandwidth); <10.9 µA (high bandwidth)
• External modulation bandwidth: DC to 10 kHz (low); DC to 300 kHz (high)
• Transfer function: 300 mA/V
• Power supply: 100–120 VAC / 200–240 VAC
• Analog input range: −10 V to +10 V
• Operating temperature: 0 to 40°C
– Key Features
• Dual operating modes: constant current and constant laser power
• Redundant FET and relay shorting circuits protect laser diodes during startup
• Slow turn-on sequence with programmable delay ensures safe initialization
• Independent, unconditional current limit protects against over-current conditions
• Built-in photodiode monitoring with configurable reverse bias (0 to −5 V)
• Photodiode measurement range: 0 to 5000 µA (0.1 µA resolution)
• Monitor current accuracy: ±0.05 A across 0–50 mA range
• CDRH US21 CFR 1040.10 laser safety compliance
• Output on/off keyswitch and interlock provision for external safety integration
• Internal sine and square wave modulators
– Interfaces
• USB computer interface with LabView drivers
• External modulation input for voltage control
• Monitor current output and photodiode feedback
– Typical Applications
Spectroscopy, fiber optic communications, and precision laser-diode characterization requiring stable sub-milliamp to multi-ampere current control.
