The ILX Lightwave LDC-3752M is a precision laser diode controller combining high-stability current delivery with integrated temperature management. It provides dual-range current output (2A/4A), advanced laser protection, and hybrid P-I temperature control from −100°C to 199°C, serving demanding laboratory and production environments requiring simultaneous optical and thermal regulation.
## Technical Specifications
**Laser Current Source**
• Dual current ranges: 2A / 4A
• Setpoint accuracy: ±0.05%
• Setpoint resolution: 40 µA (2A range) / 80 µA (4A range)
• Noise and ripple: <10 µA
• Short-term stability: <20 ppm
• Compliance voltage: 10V
• Low bandwidth mode: DC operation with external modulation to 15 kHz
• High bandwidth mode: Modulation to 1 MHz for dithering and wavelength tuning
• Constant power mode: Rear facet or external photodiode feedback
• Analog modulation: Differential input for improved laser protection
**Temperature Controller**
• TEC output power: 32W
• TEC output current: 4A
• TEC output voltage: 8V
• Temperature control range: −100°C to 199°C
• Temperature stability: ±0.004°C (with calibrated sensor)
• Temperature measurement accuracy: ±0.05°C (with calibrated sensor)
• Temperature setpoint resolution: 0.01°C
• Control loop: Hybrid P-I
• Sensor types: Thermistor, IC, RTD
• Control modes: Constant temperature, constant sensor, constant TE current
## Key Features
• Independent current limits with adjustable threshold
• Slow-start turn-on circuitry
• Adjustable compliance voltage
• Intermittent contact protection
• Output shorting relays and semiconductor switch
• Isolated laser and temperature control power supplies
• Fast output shut-off response
• Power line surge and EFT transient protection
• Redundant current limit
• Temperature sensor or TE module open-circuit shutoff
## Typical Applications
• High-precision laser diode characterization
• Wavelength-tuned optical systems
• Production-line laser module testing
• Research and development optical platforms
## Compatibility & Integration
Supports thermistor, IC, and RTD temperature sensors. Capable of measuring temperature, current, resistance, and voltage across TEC circuit.
