The ILX Lightwave LDC-3742 is a precision laser diode controller from the LDC-3700 Series that delivers stable, accurate control of laser diode current and temperature in a single benchtop instrument. Built for laboratory, research, and industrial environments, it combines a low-noise current source with an integrated 32 W thermoelectric cooler controller. The instrument operates in Constant Current, Constant Optical Power, and High Bandwidth modes, protecting sensitive laser diodes through slow start, adjustable current limiting, compliance voltage control, intermittent contact protection, and independent power supplies for laser and TEC circuits.
## Technical Specifications
• Current output: 2 A / 4 A dual range
• Current accuracy: 0.05%
• Current noise: As low as 1.5 µA
• Temperature controller: 32 W thermoelectric cooler
• Temperature stability: ±0.004°C
• Temperature resolution: 0.01°C
• Temperature measurement accuracy: 0.05°C (with calibrated sensor)
• Analog modulation bandwidth: Up to 1 MHz
• Laser forward voltage measurement: 4-wire configuration
## Key Features
• Three operating modes for diverse application requirements: Constant Current, Constant Optical Power (with photodiode feedback), and High Bandwidth for external modulation
• Integrated temperature measurement supports thermistor, IC sensors (AD590, LM335), and RTD inputs
• Photodiode monitor input for power feedback and control
• TE voltage measurement capability
• Multiple laser diode protection mechanisms minimize device degradation and failure risk
## Typical Applications
Precision laser diode characterization, optical communication system development, fiber-coupled laser modules, research instrumentation, and industrial laser systems requiring synchronized thermal and electrical control.
## Compatibility & Integration
• GPIB/IEEE-488 remote interface standard
• USB support on LDC-3700C variants
• Benchtop form factor, approximately 35–45 lbs
