The Thorlabs LDC8005 is a 1-slot laser diode current control module engineered for the PRO8000 series mainframe chassis. It delivers precise, stable current regulation with dual operating modes—constant current and constant power—to support research and industrial laser applications. The module combines adjustable hardware and software current limits with comprehensive protection circuitry to ensure reliable diode operation and extended component life.
Technical Specifications
Output Current & Control
• Output current: 0 to ±500 mA
• Setting resolution: 16-bit
• Setting accuracy (full scale): ±0.05%
• Measurement resolution: 15 µA
• Current drift (24 hours): < 2 µA
• Noise (10 Hz – 10 MHz, rms): < 5 µA
• Rise/fall time: 5 V
• Bias voltage: 0 V or 5 V (switchable, reverse)
Monitor Diode & Photodetection
• Input: Transimpedance amplifier, 0 Ω input impedance
• Operation modes: Photovoltaic (0 V bias) or photoconductive (5 V bias)
• Polarity support: Anode Ground (AG) and Cathode Ground (CG)
– Key Features
• Dual current limiting: Hardware (front panel potentiometer) and software (D/A converter); lower limit applies
• Soft start function prevents current overshoots and spikes during device activation
• AC power interruption protection maintains transient-free laser current
• Voltage peak suppression via electronic filtering and transformer shielding
• Electronic short-circuit switch guards against static discharge
• Optical power limiting in constant current mode prevents mirror damage
• Cable interlock monitoring detects disconnection or poor contact
• Over-temperature protection per module
• Separate On/Off control for each module
• Control LED indicates active laser current
• Compliant with CDRH US 21 CFR 1040.10 and IEC 60825-1 laser safety standards
– Compatibility & Integration
The LDC8005 operates within PRO8000, PRO8000-4, and PRO800 mainframe chassis, enabling flexible multi-slot configurations for integrated laser control systems.
