The ILX Lightwave LDC-3742B is a precision 1/3 A laser diode controller engineered to deliver stable, accurate current control for laser diode applications. Part of the LDC-3700 Series, this instrument combines a high-stability laser current source with an integrated 32W temperature controller to ensure reliable diode operation and wavelength stability across demanding test environments.
## Technical Specifications
**Laser Diode Current Source**
• Current Output: 1/3 A (approximately 333 mA)
• Operating Modes: Constant Current (DC with external modulation capability), High Bandwidth (optimized for higher frequency modulation), and Constant Optical Power (photodiode-referenced control from rear-facet or external photodiode)
• Analog Modulation: Up to 1 MHz
• Current Stability: ±0.004°C temperature stability maintained by control algorithm for precise wavelength control
• Set Point Accuracy: +0.05%
**Temperature Controller**
• Power Rating: 32W integrated thermoelectric cooler controller
• Temperature Range: −100°C to 199.9°C
• Temperature Stability: ±0.004°C
• Temperature Resolution: 0.01°C
• Sensor Compatibility: Thermistor, IC, and RTD temperature sensors with Steinhart-Hart calibration support for thermistor operation
• Control Modes: Constant Temperature, Constant Sensor value, and Constant TE Current
## Key Features
• Low-noise current source with advanced laser diode protection circuitry
• Dual-function architecture eliminates need for separate current and temperature control instrumentation
• Extended temperature operating range enables wavelength tuning and thermal management across diverse applications
• Multiple sensor input options accommodate various diode packaging and monitoring requirements
• High-bandwidth modulation capability for advanced signal delivery
## Typical Applications
• Telecommunications and fiber-optic system testing
• Wavelength-critical laser diode characterization
• Optical sensing and measurement systems
• Research and development of laser-based instruments
## Compatibility & Integration
The LDC-3742B integrates into the LDC-3700 Series ecosystem. Related models include the LDC-3714B (50/100 mA dual range), LDC-3724B (200/500 mA dual range), and LDC-3744B (2/4 A dual range) for applications requiring different current specifications.
