The ILX Lightwave LDP-3840/03 is a precision pulsed current source delivering up to 3 A of peak pulse current for testing higher power laser diodes and sensitive optoelectronic devices. The instrument combines nanosecond-scale pulse control with advanced laser safety interlocks and CDRH compliance, making it suitable for R&D and manufacturing environments where device protection and measurement repeatability are critical.
Technical Specifications
• Maximum Peak Pulse Current: 3 A
• Pulse Width Range: 100 ns to 10 µs
• Pulse Width Resolution: 100 ns
• Pulse Width Accuracy: –35 to 10 ns
• Rise/Fall Time: < 40 ns (typical)
• Overshoot: Less than 5%
• Pulse Polarity: User-selectable (positive or negative)
• Output Accuracy (at setpoints < 10% of full range): 20 mA ±4% of setpoint
• Operating Temperature: 10°C to 40°C
• Storage Temperature: –40°C to 70°C
• Humidity: 300 mA ensure practical accuracy across operating range
• Redundant output shorting circuits and transient suppression protect against load faults
• Closed-case calibration with non-volatile memory storage eliminates downtime
• Microprocessor-controlled architecture reduces maintenance overhead
• Meets CDRH US 21 CFR 1040.10 laser safety regulations
– Typical Applications
Optical component testing, laser diode characterization, pulsed semiconductor device validation, and automated manufacturing test systems requiring software control and fast pulse sequencing.
– Compatibility & Integration
• GPIB Interface: IEEE-488 for remote instrument control
• Trigger Functions: Standard Trigger-In and Trigger-Out connectors
• Mounting Boards: Compatible with LPB-382P (case +) and LPB-382N (case –); LPB-380 recommended for optimized pulse response
• Software Support: LabVIEW® 3.0 instrument driver available
• Dimensions: 88 mm H × 185 mm W × 304 mm D
• Weight: 3.6 kg














