The Newport 8520D/9520D Laser Diode Drivers deliver precision current and temperature control for demanding scientific and industrial applications. These drivers combine stable, low-noise output with comprehensive laser diode protection to ensure reliable performance in high-precision optical systems. Operating in constant current and constant power modes, they accommodate applications ranging from low-current precision diodes to high-power QCW systems.
Technical Specifications
Output Current
• Up to 220 A QCW (Quasi-Continuous Wave)
• Up to 125 A CW (Continuous Wave)
• Up to 3 A for precision laser diode driver cards
Compliance Voltage: Up to 35 V
Output Stability & Noise
• Better than 10 ppm stability over one hour
• <100 nA rms noise in battery mode (specific low-noise models)
Interfaces
• GPIB available on precision laser diode drivers
– Key Features
Operating Modes
• Constant Current (CC) mode for precise output current control
• Constant Power (CP) mode for stable optical power delivery
Laser Diode Protection
• Adjustable current limits
• Redundant hardware current limits
• Adjustable voltage limit (selected models)
• Slow start circuitry
• Output shorting relays
• Transient protection
Form Factor
Available as both driver cards and standalone units.
– Compatibility & Integration
Fully compatible with Newport's laser diode mounts, fixtures, and associated temperature controllers. Proper grounding and safe handling procedures are documented in user manuals. Avoid operation in extreme temperature environments and disconnect from power before servicing.
