ILX Lightwave LDC-3722: 200/500 mA Laser Diode Controller, LDC-3700 Series
The ILX Lightwave LDC-3722 is a precision laser diode controller from the LDC-3700 series, capable of delivering 200/500 mA. It ensures stable and accurate control of laser diode current and temperature, crucial for demanding laser applications.
- Model
- ILX Lightwave LDC-3722
- Calibration
- Available on request
- Price
- $1,730
- Status
- In stock
- RFQ ref
- LDC-3722
This unit
The ILX Lightwave LDC-3722 is a precision laser diode controller combining current source and thermoelectric cooler (TEC) drive circuits in a single instrument. Operating in dual-range modes (200 mA or 500 mA), it delivers ±0.05% output current accuracy with <40 ppm/°C stability over 24 hours and <2 µA setpoint resolution. Three operating modes
Constant Current, High Bandwidth (DC to 1 MHz), and Constant Optical Power - accommodate diverse experimental configurations. The instrument integrates comprehensive laser protection including fully redundant current limiting, adjustable compliance voltage (max 10 V), slow-start current ramping, and output shorting relays.
Technical Specifications Laser Diode Current Source
Dual-range operation: 200 mA or 500 mA
Output current accuracy: ±0.05%
Output current stability: <40 ppm/°C (24-hour window)
Current setpoint resolution: <2 µA
Voltage measurement accuracy: ±2.5%
Compliance voltage (max): 10 V
Bandwidth (3 dB): DC to 1 MHz
Analog modulation capability: To 1 MHz Temperature Controller (TEC)
TEC output current range: −4 A to +4 A
Maximum TEC output power: 32 W
Temperature stability: ±0.004°C
Temperature control range: −100°C to 199.9°C
Temperature setpoint resolution: 0.1°C
Temperature measurement accuracy: 0.05°C (calibrated sensor)
Supported sensors: Thermistor, IC (AD590LH, LM335AH), RTD
TEC current limit range: 0 to 4 A Photodiode Measurement
Measurement range: 5 to 5000 µA
Setpoint accuracy: ±0.05%
Key Features
Three independent control modes optimize performance across constant current, high-bandwidth modulation, and optical power feedback applications
Fully redundant current limiting with adjustable limits and slow-start ramping
Multiple laser protection circuits including intermittent contact protection, output shorting relays, and surge protection
Integrated TEC control supports constant temperature, constant sensor, or constant TE current modes
Digital display and optional GPIB (IEEE-488/IEEE-488.2) interface for remote automation
Typical Applications Lab and industrial laser diode characterization, fiber-coupled laser modules, optical communication testing, and temperature-stabilized diode operation.
Compatibility & Integration Power requirements: 100–120 VAC (±10%) or 220–240 VAC (±10%), 50–60 Hz. Analog modulation input: 0 to 10 V, 10 kΩ input impedance. Optional GPIB interface enables automated measurement sequences and instrument control.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 1 MHz | Voltage / Current Range: Laser diode: 200/500 mA |
| TEC | −4 A to +4 A |
| Compliance | 0–10 V |
| Modulation input | 0–10 V |
ILX Lightwave LDC-3722 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the ILX Lightwave LDC-3722. Calibration covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common ILX Lightwave LDC-3722 faults: laser diode end-of-life (output below spec), fiber output connector damage, output instability. Common repairs include laser diode replacement when output falls below spec, fiber output connector repair, and thermal management service.
ILX Lightwave LDC-3722 price
This ILX Lightwave LDC-3722 is listed at $1,730. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
ILX Lightwave LDC-3722 calibration cost
NIST-traceable calibration for the ILX Lightwave LDC-3722 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
