The ILX Lightwave LDC-39032 is a modular laser diode controller that delivers precision current and temperature regulation for laser diode test and deployment systems. The LDC-3900 mainframe accommodates up to four interchangeable modules—current sources, thermoelectric controllers, or combination units—enabling flexible system configurations without redesign. Each module bay features independent power supplies and full electrical isolation to eliminate ground loops and protect sensitive devices.
Technical Specifications
Modular Architecture
• Four independent module bays with isolated power supplies per channel
• Fully floating module design prevents ground loop coupling
• Interchangeable current source modules: 200 mA to 8 A maximum output ratings
• Thermoelectric controller modules: up to 32 W output power
• Combination modules: integrated current control (up to 2 A) with 12 W TE control in single package
Current Source Performance
• Operates in Constant Current (low and high bandwidth) and Constant Optical Power modes
• Integrated photodiode measurement circuit for back facet monitor compatibility
• Analog modulation capability to 500 kHz for wavelength tuning and dithering applications
Temperature Control
• Thermoelectric modules achieve temperature stability better than 0.005°C
• Ultra-stable bipolar output topology with low-noise design
• Programmable smart integrator control loop for fast settling
• Accepts thermistors, IC sensors, and RTD temperature sensors
• TE voltage measurement capabilities included
Laser Diode Protection
• Independent current limiting per channel
• Laser diode shorting relays for device protection
• Low-noise architecture with high stability across all modules
– Key Features
• GPIB (IEEE-488.2) interface for remote programming and control
• LabVIEW drivers available for automation and system integration
• Front panel programmability and monitoring
• Channel-to-channel isolation prevents cross-talk and interference
– Typical Applications
Precision laser diode characterization, wavelength-tunable laser systems, optical power stabilization, temperature-dependent parameter measurement, and multi-channel test configurations requiring independent control and protection.
– Compatibility & Integration
The modular design permits mixed-module configurations within a single mainframe. Current sources, TE controllers, and combination modules can be deployed in any combination across the four available bays.
